Answer
$9g^{2}-25$
Work Step by Step
Simplify each product. Write in standard form.
$(3g-5)(3g+5)$
Use Foil
$(3g\times3g)+(3g\times5)+(-5\times3g)+(-5\times5)$
Simplify:
$9g^{2}+15g-15g-25$
simplify
$9g^{2}-25$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 9 - Quadratic Functions and Equations - 9-3 Solving Quadratic Equations - Practice and Problem-Solving Exercises - Page 551: 13
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