Question

X^2 - xy if x = 8 and y = -3Evaluate each expression given the variable replacement

Answer 1

Given:

`\begin{gathered} x^2-xy \\ \text{and} \\ x=8 \\ y=-3 \end{gathered}`

Find: Evaluate the expression:

Sol:.

`\begin{gathered} x^2-xy \\ x=8 \\ y=-3 \end{gathered}`

Put the value of "x" and "y" then:

`\begin{gathered} =x^2-xy \\ =(8)^2-(8)(-3) \\ =64+24 \\ =88 \end{gathered}`

So the value of expression is 88