How do I solve: (7y^2-4y+8)-(4y^2-4y+6) and simplify?

Answer 1

The expression is (7y^2 - 4y + 8) - (4y^2 - 4y + 6).

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

= 7y^2 - 4y + 8 - 4y^2 + 4y - 6

= 3y^2 + 2.

Therefore, (7y^2 - 4y + 8) - (4y^2 - 4y + 6) = 3y^2 + 2.