Answer
$$ -3y^2 +6$$
Work Step by Step
Recall, standard form is $ax^2+bx+c$. Thus, combining like terms, we find:
$$(4-7)y^2 -3+9 \\ -3y^2 +6$$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - P.3 - Polynomials and Special Products - Exercises - Page 31: 20
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