# How do you simplify 4x^-5*xy^3 and write it using only positive exponents?

Mar 17, 2017

$\frac{4 {y}^{3}}{x} ^ 4$

#### Explanation:

Given -

$4 {x}^{- 5} . x {y}^{3}$

$4 {x}^{- 5 + 1} {y}^{3}$
$4 {x}^{- 4} {y}^{3}$

$\frac{4 {y}^{3}}{x} ^ 4$