Question

Evaluate the following expression using the values given.

Answer 1

Could you post the expression and values, please. :)

Answer 2

Find 2x2 - 2z4 + y2 - x2 + z4 if x = -4, y = 3, and z = 2.

Answer 3

OK, so the expression has powers like this, right? \[2x^2 - 2z^4 + y^2 - x^2 + z^4\]

Answer 4

yes

Answer 5

OK, so to evaluate an expression all you have to do is "substitute" the values in. That means wherever you see an x, replace it with a -4; wherever you see a y, replace it with a 3; wherever you see a z, replace it with a 2.

Be careful to always put parentheses when you replace like this
\[2( )^2 - 2()^4 + ()^2 - ()^2 + ()^4\] and fill in the blanks with the right numbers.

Answer 6

Go ahead and try it and tell us what you get for an answer. :)

Answer 7

Then, we'll help you fix any mistakes. :)

Answer 8

Or, we'll congratulate you on a correct solution! :D