Question

Evaluate 4x^2 – 3xy if x=-3 and y=-2

Answer 1

We have the following:

$4x^2-3xy$

replacing, x=-3 and y=-2:

$\begin{gathered} 4\cdot(-3)^2-3\cdot(-3)\cdot(-2) \\ 4\cdot9-18 \\ 36-18=18 \end{gathered}$

The answer is 18.