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Simplifying 28x4\frac{2}{\sqrt[4]{8x}}

To simplify the expression 28x4\frac{2}{\sqrt[4]{8x}}, begin by rewriting the radicand in the denominator to show its prime factors, giving 223x4\frac{2}{\sqrt[4]{2^3x}}. To rationalize the denominator, multiply both the numerator and the denominator by 2x34\sqrt[4]{2x^3} to provide the missing factors needed to create perfect fourth powers: one additional 2 and three additional xx's. The expression becomes 22x3423x42x34=22x3424x44\frac{2 \cdot \sqrt[4]{2x^3}}{\sqrt[4]{2^3x} \cdot \sqrt[4]{2x^3}} = \frac{2\sqrt[4]{2x^3}}{\sqrt[4]{2^4x^4}}. Simplifying the denominator yields 22x342x\frac{2\sqrt[4]{2x^3}}{2x}. Finally, dividing out the common numerical factor of 2 results in the simplified expression 2x34x\frac{\sqrt[4]{2x^3}}{x}.

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Updated 2026-05-25

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