Question 185987
2x^2(y - 2) + y(x^2 + 2)

You must first do the multiplication on both sides by distributing the terms.
This gives you:
2x^2y - 4x^2 + x^2y + 2y
Now add "like" terms:
3x^2y - 4x^2 + 2y.

Good luck!
JoeC