Factor: $7 z ^ { 2 } - 70 z + 147$
A) $7 ( z + 7 ) ( z + 3 )$
B) $7 ( z - 7 ) ( z + 3 )$
C) $7 ( z + 7 ) ( z - 3 )$
D) $7 ( z - 7 ) ( z - 3 )$
E) Nonfactorable over the integers

Name: Factor: $7 z ^ { 2 } - 70 z + 147$ A) $7 ( z + 7 ) ( z + 3 )$ B) $7 ( z - 7 ) ( z + 3 )$ C) $7 ( z + 7 ) ( z - 3 )$ D) $7 ( z - 7 ) ( z - 3 )$ E) Nonfactorable over the integers
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Question

Quizplus · Accepted Answer

The correct factorization of $7z^2 - 70z + 147$ is $7(z^2 - 10z + 21)$, which further factors into $7(z - 7)(z - 3)$, making option D correct.

Factor 7z2−70z+1477 z ^ { 2 } - 70 z + 1477z2−70z+147

Factor $7 z ^ { 2 } - 70 z + 147$