Answer
$7(3z-7)(z-1)$
Work Step by Step
Factor each expression.
$21z^{2}-70z+49$
Factor out a $7$
$7(3z^{2}-10z+7)
Rewrite as:
$7(3z^{2}-3z-7z+7)
Factor:
$7(3z(z-1)-7(z-1))$
Factor:
$7(3z-7)(z-1)$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 8 - Polynomials and Factoring - Chapter Review - 8-5 and 8-6 Factoring Quadratic Trinomials - Page 525: 53
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