## Algebra: A Combined Approach (4th Edition)

Published by Pearson

# Appendix A - Exercise Set: 31

#### 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)

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