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\frac{256}{\sqrt[4]{4}}=128\sqrt{2}
Calculate 4 to the power of 4 and get 256.
\sqrt[4]{4}=\sqrt[4]{2^{2}}=2^{\frac{2}{4}}=2^{\frac{1}{2}}=\sqrt{2}
Rewrite \sqrt[4]{4} as \sqrt[4]{2^{2}}. Convert from radical to exponential form and cancel out 2 in the exponent. Convert back to radical form.
\frac{256}{\sqrt{2}}=128\sqrt{2}
Insert the obtained value back in the expression.
\frac{256\sqrt{2}}{\left(\sqrt{2}\right)^{2}}=128\sqrt{2}
Rationalize the denominator of \frac{256}{\sqrt{2}} by multiplying numerator and denominator by \sqrt{2}.
\frac{256\sqrt{2}}{2}=128\sqrt{2}
The square of \sqrt{2} is 2.
128\sqrt{2}=128\sqrt{2}
Divide 256\sqrt{2} by 2 to get 128\sqrt{2}.
128\sqrt{2}-128\sqrt{2}=0
Subtract 128\sqrt{2} from both sides.
0=0
Combine 128\sqrt{2} and -128\sqrt{2} to get 0.
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Compare 0 and 0.