Question

Evaluate the expression below for x = 4, y = –5, and z = 2.

3x^2 -4y+xz

A.12
B. 36
C. 52
D. 76

Answer 1

Hello @kaleb1 and Welcome!

For this we "plug in" the given values into the given equation.

For EXAMPLE
if x = 4 and they want us to plug it into 3x^2
we would do this:
3(4)^2 = 3*(4*4) = 3*16 = 48

we can do something similar for your question!

Answer 2

so we "plug in" x=4 for all the x in your equation
y= -5
z=2 and so on

it would look something like this:
3*(4)^2 - 4(-5) + (4)(2)

then we can simplify (keep in mind the order of operations)

Answer 3

This should be able to get you to the answer you need

If you're still stuck or need more help, feel free to ask or tag me with @Champion :-)