Evaluate the following expression when x=-4 and y=4x³-x /4y(x)/(y)

Question

Evaluate the following expression when x=-4 and y=4x³-x /4y
`(x)/(y)`

Answer 1

-15/4

Explanation

Given the expression:

`(x^3-x)/(4y)`

Substituting x = -4 and y = 4:

`\begin{gathered} ((-4)^3-(-4))/(4\cdot4)= \\ =(-64+4)/(16)= \\ =(-60)/(16)= \\ =-(15)/(4) \end{gathered}`