Practice problem
Simplify x4x3÷5xx−1.\frac{x}{4x^3}\div\frac{5x}{x^{-1}}.4x3x÷x−15x.
120x4\frac{1}{20x^4}20x41
20x220x^220x2
54x2\frac{5}{4x^2}4x25
120x2\frac{1}{20x^2}20x21
Type a concept, like “slope” or “photosynthesis”.