Solve for x 2+ square root of x+10=x

$2 + \sqrt{x + 10} = x$

Subtract $2$ from both sides of the equation.

$\sqrt{x + 10} = x - 2$

To remove the radical on the left side of the equation, square both sides of the equation.

${\sqrt{x + 10}}^{2} = {(x - 2)}^{2}$

Simplify each side of the equation.

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x + 10}$ as ${(x + 10)}^{\frac{1}{2}}$ .

${({(x + 10)}^{\frac{1}{2}})}^{2} = {(x - 2)}^{2}$

Simplify the left side.

Simplify ${({(x + 10)}^{\frac{1}{2}})}^{2}$ .

Multiply the exponents in ${({(x + 10)}^{\frac{1}{2}})}^{2}$ .

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

${(x + 10)}^{\frac{1}{2} \cdot 2} = {(x - 2)}^{2}$

Cancel the common factor of $2$ .

Cancel the common factor.

${(x + 10)}^{\frac{1}{2} \cdot 2} = {(x - 2)}^{2}$

Rewrite the expression.

${(x + 10)}^{1} = {(x - 2)}^{2}$

Simplify.

$x + 10 = {(x - 2)}^{2}$

Simplify the right side.

Simplify ${(x - 2)}^{2}$ .

Rewrite ${(x - 2)}^{2}$ as $(x - 2) (x - 2)$ .

$x + 10 = (x - 2) (x - 2)$

Expand $(x - 2) (x - 2)$ using the FOIL Method.

Apply the distributive property.

$x + 10 = x (x - 2) - 2 (x - 2)$

Apply the distributive property.

$x + 10 = x \cdot x + x \cdot - 2 - 2 (x - 2)$

Apply the distributive property.

$x + 10 = x \cdot x + x \cdot - 2 - 2 x - 2 \cdot - 2$

Simplify and combine like terms.

Simplify each term.

Multiply $x$ by $x$ .

$x + 10 = x^{2} + x \cdot - 2 - 2 x - 2 \cdot - 2$

Move $- 2$ to the left of $x$ .

$x + 10 = x^{2} - 2 \cdot x - 2 x - 2 \cdot - 2$

Multiply $- 2$ by $- 2$ .

$x + 10 = x^{2} - 2 x - 2 x + 4$

Subtract $2 x$ from $- 2 x$ .

$x + 10 = x^{2} - 4 x + 4$

Solve for $x$ .

Since $x$ is on the right side of the equation, switch the sides so it is on the left side of the equation.

$x^{2} - 4 x + 4 = x + 10$

Move all terms containing $x$ to the left side of the equation.

Subtract $x$ from both sides of the equation.

$x^{2} - 4 x + 4 - x = 10$

Subtract $x$ from $- 4 x$ .

$x^{2} - 5 x + 4 = 10$

Subtract $10$ from both sides of the equation.

$x^{2} - 5 x + 4 - 10 = 0$

Subtract $10$ from $4$ .

$x^{2} - 5 x - 6 = 0$

Factor $x^{2} - 5 x - 6$ using the AC method.

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $- 6$ and whose sum is $- 5$ .

$- 6, 1$

Write the factored form using these integers.

$(x - 6) (x + 1) = 0$

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$x - 6 = 0$

$x + 1 = 0$

Set $x - 6$ equal to $0$ and solve for $x$ .

Set $x - 6$ equal to $0$ .

$x - 6 = 0$

Add $6$ to both sides of the equation.

$x = 6$

Set $x + 1$ equal to $0$ and solve for $x$ .

Set $x + 1$ equal to $0$ .

$x + 1 = 0$

Subtract $1$ from both sides of the equation.

$x = - 1$

The final solution is all the values that make $(x - 6) (x + 1) = 0$ true.

$x = 6, - 1$

Exclude the solutions that do not make $2 + \sqrt{x + 10} = x$ true.

$x = 6$

Solve for x 2+ square root of x+10=x

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