Question

All of the following expressions have the same value, when x = -2 and y = 4, except _____.


x 2y
(-2) 2y
-4x 2
-2xy please help me:(

Answer 1

dont you just have to plug them in?

Answer 2

i think so

Answer 3

ok so for the first one you are multiplying (-2)2(4)

Answer 4

so what is that?

Answer 5

...its -16

Answer 6

then the next one is (-2)2(4) .....so its the same thing -16!!

Answer 7

then the next one is (-4)(-2)(2) ....uh oh this one is just 16

Answer 8

then the next one is (-2)(-2)(4) is this where you got stuck because there are two 16s and two -16s?

Answer 9

okay so

Answer 10

soo...

Answer 11

basicly their is no right answer?

Answer 12

well is it a mistake?