Question

evaluate 9x^2y^-2 for x=3 and y=2

Answer 1

9*(3)^2*(2)^2 = ?

Answer 2

=324

Did that made sense to you?

Answer 3

the last 2 is to the -2 power not positive and yeah that made since i kinda did it like that the first time and my
teacher wrote to use PEMDAS

Answer 4

Oh sorry did see that..

Answer 5

9*(3)^2*(2)^-2 = 20.25

Answer 6

oh and it should say for x=-3 and y=2 my bad

Answer 7

9(-3)^2*(2)^2 = 324

Answer 8

when i did it earlier i did this 9(-3)^2 * 2^-2 = 27^2 *1/4=729* 1/4 =183.25
can you tell me where i went wrong?

Answer 9

First- Substitute the given x and y for the expression.
Second- 9*((-3)^2)*(2^2)

You first solve the parenthesis, what you did is you multiplied 9 by -3 and then you squared root it.