Question

How do you combine like terms in `(4y ^ { 2} - 7y + 6) - ( 6y ^ { 2} - 7y + 8)`?

Answer 1

`-2y^2 -2`

Explanation:

First, eliminate the parenthesis, then group like terms and then combine like terms:

`4y^2 - 7y + 6 - 6y^2 + 7y - 8 ->`

`4y^2 - 6y^2 - 7y + 7y + 6 - 8 ->`

(4 - 6)y^2 - (7y - 7y) + (6 - 8) ->#

`-2y^2 -2`