When x=-1 and y=-2 , how do the two expressions compare?

when x = - 1 and y = - 2

=><

3x-y2 (x+y) 2+y

Step-by-step explanation:

3 (-1) - (-2) 2 = (-1 + (-2)) 2 + (-2)

-3 - (-4) = (-1 - 2) 2 - 2

-3 + 4 = (-3) 2 - 2

1 = - 6 - 2

1 = - 8

Their answer is different after substitution.

3x - y2 has an answer that is 1 while (x + y) 2 + y has an answer of - 8.

(x + y) 2 + y does not have a 3 in it like the first equation 3x - y2.

x and y are in parentheses in (x + y) 2 + y and the equation 3x - y2 aren't.