Simplify (1/( square root of x+h)-1/( square root of x))/h

$\frac{\frac{1}{\sqrt{x + h}} - \frac{1}{\sqrt{x}}}{h}$

Step 1

Simplify the numerator.

Multiply $\frac{1}{\sqrt{x}}$ by $\frac{\sqrt{x}}{\sqrt{x}}$ .

$\frac{\frac{1}{\sqrt{x + h}} - (\frac{1}{\sqrt{x}} \cdot \frac{\sqrt{x}}{\sqrt{x}})}{h}$

Combine and simplify the denominator.

Multiply $\frac{1}{\sqrt{x}}$ by $\frac{\sqrt{x}}{\sqrt{x}}$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{\sqrt{x} \sqrt{x}}}{h}$

Raise $\sqrt{x}$ to the power of $1$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{{\sqrt{x}}^{1} \sqrt{x}}}{h}$

Raise $\sqrt{x}$ to the power of $1$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{{\sqrt{x}}^{1} {\sqrt{x}}^{1}}}{h}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{{\sqrt{x}}^{1 + 1}}}{h}$

Add $1$ and $1$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{{\sqrt{x}}^{2}}}{h}$

Rewrite ${\sqrt{x}}^{2}$ as $x$ .

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x}$ as $x^{\frac{1}{2}}$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{{(x^{\frac{1}{2}})}^{2}}}{h}$

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{x^{\frac{1}{2} \cdot 2}}}{h}$

Combine $\frac{1}{2}$ and $2$ .

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{x^{\frac{2}{2}}}}{h}$

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{x^{\frac{2}{2}}}}{h}$

Rewrite the expression.

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{x^{1}}}{h}$

Simplify.

$\frac{\frac{1}{\sqrt{x + h}} - \frac{\sqrt{x}}{x}}{h}$

To write $\frac{1}{\sqrt{x + h}}$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$\frac{\frac{1}{\sqrt{x + h}} \cdot \frac{x}{x} - \frac{\sqrt{x}}{x}}{h}$

To write $- \frac{\sqrt{x}}{x}$ as a fraction with a common denominator, multiply by $\frac{\sqrt{x + h}}{\sqrt{x + h}}$ .

$\frac{\frac{1}{\sqrt{x + h}} \cdot \frac{x}{x} - \frac{\sqrt{x}}{x} \cdot \frac{\sqrt{x + h}}{\sqrt{x + h}}}{h}$

Write each expression with a common denominator of $\sqrt{x + h} x$ , by multiplying each by an appropriate factor of $1$ .

Multiply $\frac{1}{\sqrt{x + h}}$ by $\frac{x}{x}$ .

$\frac{\frac{x}{\sqrt{x + h} x} - \frac{\sqrt{x}}{x} \cdot \frac{\sqrt{x + h}}{\sqrt{x + h}}}{h}$

Multiply $\frac{\sqrt{x}}{x}$ by $\frac{\sqrt{x + h}}{\sqrt{x + h}}$ .

$\frac{\frac{x}{\sqrt{x + h} x} - \frac{\sqrt{x} \sqrt{x + h}}{x \sqrt{x + h}}}{h}$

Reorder the factors of $\sqrt{x + h} x$ .

$\frac{\frac{x}{x \sqrt{x + h}} - \frac{\sqrt{x} \sqrt{x + h}}{x \sqrt{x + h}}}{h}$

Combine the numerators over the common denominator.

$\frac{\frac{x - \sqrt{x} \sqrt{x + h}}{x \sqrt{x + h}}}{h}$

Rewrite $\frac{x - \sqrt{x} \sqrt{x + h}}{x \sqrt{x + h}}$ in a factored form.

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x}$ as $x^{\frac{1}{2}}$ .

$\frac{\frac{x - x^{\frac{1}{2}} \sqrt{x + h}}{x \sqrt{x + h}}}{h}$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x + h}$ as ${(x + h)}^{\frac{1}{2}}$ .

$\frac{\frac{x - x^{\frac{1}{2}} {(x + h)}^{\frac{1}{2}}}{x \sqrt{x + h}}}{h}$

Factor $x^{\frac{1}{2}}$ out of $x - x^{\frac{1}{2}} {(x + h)}^{\frac{1}{2}}$ .

Reorder $x$ and $h$ .

$\frac{\frac{x - x^{\frac{1}{2}} {(h + x)}^{\frac{1}{2}}}{x \sqrt{x + h}}}{h}$

Raise $x$ to the power of $1$ .

$\frac{\frac{x^{1} - x^{\frac{1}{2}} {(h + x)}^{\frac{1}{2}}}{x \sqrt{x + h}}}{h}$

Factor $x^{\frac{1}{2}}$ out of $x^{1}$ .

$\frac{\frac{x^{\frac{1}{2}} x^{\frac{1}{2}} - x^{\frac{1}{2}} {(h + x)}^{\frac{1}{2}}}{x \sqrt{x + h}}}{h}$

Factor $x^{\frac{1}{2}}$ out of $- x^{\frac{1}{2}} {(h + x)}^{\frac{1}{2}}$ .

$\frac{\frac{x^{\frac{1}{2}} x^{\frac{1}{2}} + x^{\frac{1}{2}} (- {(h + x)}^{\frac{1}{2}})}{x \sqrt{x + h}}}{h}$

Factor $x^{\frac{1}{2}}$ out of $x^{\frac{1}{2}} x^{\frac{1}{2}} + x^{\frac{1}{2}} (- {(h + x)}^{\frac{1}{2}})$ .

$\frac{\frac{x^{\frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}})}{x \sqrt{x + h}}}{h}$

Reduce the expression $\frac{x^{\frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}})}{x \sqrt{x + h}}$ by cancelling the common factors.

Factor $x$ out of $x^{\frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}})$ .

$\frac{\frac{x (x^{- \frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}))}{x \sqrt{x + h}}}{h}$

Factor $x$ out of $x \sqrt{x + h}$ .

$\frac{\frac{x (x^{- \frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}))}{x (\sqrt{x + h})}}{h}$

Cancel the common factor.

$\frac{\frac{x (x^{- \frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}))}{x \sqrt{x + h}}}{h}$

Rewrite the expression.

$\frac{\frac{x^{- \frac{1}{2}} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}})}{\sqrt{x + h}}}{h}$

Move $x^{- \frac{1}{2}}$ to the denominator using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$\frac{\frac{x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}}{\sqrt{x + h} x^{\frac{1}{2}}}}{h}$

Multiply $\frac{x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}}{\sqrt{x + h} x^{\frac{1}{2}}}$ by $\frac{\sqrt{x + h}}{\sqrt{x + h}}$ .

$\frac{\frac{x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}}{\sqrt{x + h} x^{\frac{1}{2}}} \cdot \frac{\sqrt{x + h}}{\sqrt{x + h}}}{h}$

Combine and simplify the denominator.

Multiply $\frac{x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}}{\sqrt{x + h} x^{\frac{1}{2}}}$ by $\frac{\sqrt{x + h}}{\sqrt{x + h}}$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{\sqrt{x + h} x^{\frac{1}{2}} \sqrt{x + h}}}{h}$

Move $\sqrt{x + h}$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} (\sqrt{x + h} \sqrt{x + h})}}{h}$

Raise $\sqrt{x + h}$ to the power of $1$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} ({\sqrt{x + h}}^{1} \sqrt{x + h})}}{h}$

Raise $\sqrt{x + h}$ to the power of $1$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} ({\sqrt{x + h}}^{1} {\sqrt{x + h}}^{1})}}{h}$

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {\sqrt{x + h}}^{1 + 1}}}{h}$

Add $1$ and $1$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {\sqrt{x + h}}^{2}}}{h}$

Rewrite ${\sqrt{x + h}}^{2}$ as $x + h$ .

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x + h}$ as ${(x + h)}^{\frac{1}{2}}$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {({(x + h)}^{\frac{1}{2}})}^{2}}}{h}$

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {(x + h)}^{\frac{1}{2} \cdot 2}}}{h}$

Combine $\frac{1}{2}$ and $2$ .

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {(x + h)}^{\frac{2}{2}}}}{h}$

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {(x + h)}^{\frac{2}{2}}}}{h}$

Rewrite the expression.

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} {(x + h)}^{1}}}{h}$

Simplify.

$\frac{\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} (x + h)}}{h}$

Step 2

Multiply the numerator by the reciprocal of the denominator.

$\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} (x + h)} \cdot \frac{1}{h}$

Step 3

Combine.

$\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h} \cdot 1}{x^{\frac{1}{2}} (x + h) h}$

Step 4

Simplify the expression.

Multiply $x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}$ by $1$ .

$\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} (x + h) h}$

Reorder factors in $\frac{(x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}}) \sqrt{x + h}}{x^{\frac{1}{2}} (x + h) h}$ .

$\frac{\sqrt{x + h} (x^{\frac{1}{2}} - {(h + x)}^{\frac{1}{2}})}{h x^{\frac{1}{2}} (x + h)}$

Simplify (1/( square root of x+h)-1/( square root of x))/h

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