Simplify x cube root of 4* fourth root of 4

$x \sqrt[3]{4} \cdot \sqrt[4]{4}$

Step 1

Rewrite $4$ as $2^{2}$ .

$x \sqrt[3]{4} \cdot \sqrt[4]{2^{2}}$

Step 2

Rewrite $\sqrt[4]{2^{2}}$ as $\sqrt{\sqrt{2^{2}}}$ .

$x \sqrt[3]{4} \cdot \sqrt{\sqrt{2^{2}}}$

Step 3

Pull terms out from under the radical, assuming positive real numbers.

$x \sqrt[3]{4} \cdot \sqrt{2}$

Step 4

Multiply $x \sqrt[3]{4} \sqrt{2}$ .

Rewrite the expression using the least common index of $6$ .

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

$x (2^{\frac{1}{2}} \sqrt[3]{4})$

Rewrite $2^{\frac{1}{2}}$ as $2^{\frac{3}{6}}$ .

$x (2^{\frac{3}{6}} \sqrt[3]{4})$

Rewrite $2^{\frac{3}{6}}$ as $\sqrt[6]{2^{3}}$ .

$x (\sqrt[6]{2^{3}} \sqrt[3]{4})$

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt[3]{4}$ as $4^{\frac{1}{3}}$ .

$x (\sqrt[6]{2^{3}} \cdot 4^{\frac{1}{3}})$

Rewrite $4^{\frac{1}{3}}$ as $4^{\frac{2}{6}}$ .

$x (\sqrt[6]{2^{3}} \cdot 4^{\frac{2}{6}})$

Rewrite $4^{\frac{2}{6}}$ as $\sqrt[6]{4^{2}}$ .

$x (\sqrt[6]{2^{3}} \sqrt[6]{4^{2}})$

Combine using the product rule for radicals.

$x \sqrt[6]{2^{3} \cdot 4^{2}}$

Rewrite $4$ as $2^{2}$ .

$x \sqrt[6]{2^{3} \cdot {(2^{2})}^{2}}$

Multiply the exponents in ${(2^{2})}^{2}$ .

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

$x \sqrt[6]{2^{3} \cdot 2^{2 \cdot 2}}$

Multiply $2$ by $2$ .

$x \sqrt[6]{2^{3} \cdot 2^{4}}$

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

$x \sqrt[6]{2^{3 + 4}}$

Add $3$ and $4$ .

$x \sqrt[6]{2^{7}}$

Step 5

Raise $2$ to the power of $7$ .

$x \sqrt[6]{128}$

Step 6

Rewrite $128$ as $2^{6} \cdot 2$ .

Factor $64$ out of $128$ .

$x \sqrt[6]{64 (2)}$

Rewrite $64$ as $2^{6}$ .

$x \sqrt[6]{2^{6} \cdot 2}$

Step 7

Pull terms out from under the radical.

$x (2 \sqrt[6]{2})$

Step 8

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

$2 x \sqrt[6]{2}$

Simplify x cube root of 4* fourth root of 4

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