Question

Subtract and simplify.

(y2−3y−5)−(−y2−7y+4)
*Both Y's with no variable are squared

Answer 1

=(y2-3y-5)-(-y2-7y+4)

=y2-3y-5+y2+7y-4

=2y2+4y-9

Answer 2

=(y2-3y-5)-(-y2-7y+4)
=y2-3y-5+y2+7y-4
=2y2+4y-9

Hope this helps! :)