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

Evaluate each of the options for the values x = -2 and y = 4.

For the first one, x 2y = (x) * (2) * (y) = (-2) * 2 * (4) = -16.

Evaluate (-2) 2y for x = -2 and y = 4 and see if you get -16 or some other product.

Continue the process with the remaining two options to find which one is not the same as the others when x = -2 and y = 4.