Answer
Appendix A - Ex. Set : 31 (Answer)
$(6y^2 - 6y + 4) - (- y^2 -6y + 7)$
$= 7y^2 - 3$
Work Step by Step
Appendix A - Ex. Set : 31 (Solution)
$(6y^2 - 6y + 4) - (- y^2 -6y + 7)$
$= 6y^2 + y^2 - 6y + 6y + 4 - 7$ (Change signs and group like terms)
$= 7y^2 - 3$ (Combine like terms)