Question

Simplify (25x^2-14xy+4)-(7x^2-9y)+(2xy+7)

Answer 1

First distribute the negative to the second equation which would give you:

25x^2 - 14xy + 4 -7x^2 + 9y + 2xy + 7

Since addition is commutative. you can now just add like terms.

18x^2 - 12xy + 9y + 11