Question

Evaluate the expression for x = –9, y = –4, and z = –1.
xz − xy =

Answer 1

-23 why does my answer have to be 20 letters long

Answer 2

-27

Explanation:

Substitute the numbers in for the variables:

(-9)(-1) — (-9)(-4)

Multiply it out and you'll get:

9 — 36

Then, just subtract:

-27