SOLUTION: I am having difficulty evaluating the following polynomial. xy^2z-z for x=2, y=-3, z=-4 Do I set the problem as 2(-3)^2-4-4? Thank you in advance for your assistance.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am having difficulty evaluating the following polynomial. xy^2z-z for x=2, y=-3, z=-4 Do I set the problem as 2(-3)^2-4-4? Thank you in advance for your assistance.      Log On


   

Question 846798: I am having difficulty evaluating the following polynomial.
xy^2z-z for x=2, y=-3, z=-4
Do I set the problem as
2(-3)^2-4-4?
Thank you in advance for your assistance.
Answer by josh_jordan(263) About Me  (Show Source):
You can put this solution on YOUR website!
Hello. You are close.

If the original polynomial is x%2Ay%5E2%2Az-z

Then your substitution would look like the following:

%282%29%28-3%5E2%29%28-4%29-%28-4%29

You would then solve by following the order of operations.

2 x 9 x -4 + 4 ----->

18 x -4 + 4 ----->

-72 + 4 ----->

-68