Question

I am clueless on how to help my son solve this problem :( any help is appreciated

Answer 1

D.

EXPLANATION :

From the problem, we have the upper and lower tiles.

Upper tiles :

-x^2 + 2x + 3

Lower tiles :

-x^2 - 2x - 1

We can notice that 1 was canceled together with -1

So we can say that the operation is addition since 1 + (-1) = 0

So the expression will be :

`(-x^2+2x+3)+(-x^2-2x-1)=-2x^2+2`