Factor out the greatest common factor.
-$21 x ^ { 4 } - 9 x ^ { 3 } + 15 x ^ { 2 }$
A) $3 x ^ { 2 } \left( 7 x ^ { 2 } - 3 x + 5 \right)$
B) $x ^ { 2 } \left( 21 x ^ { 2 } - 9 x + 15 \right)$
C) $3 x \left( 7 x ^ { 3 } - 3 x ^ { 2 } + 5 x \right)$
D) $3 \left( 7 x ^ { 4 } - 3 x ^ { 3 } + 5 x ^ { 2 } \right)$

Question

Quizplus · Accepted Answer

The greatest common factor among the terms $21x^4$, $-9x^3$, and $15x^2$ is $3x^2$, which when factored out, leaves the expression $3x^2(7x^2 - 3x + 5)$.

Factor Out the Greatest Common Factor 21x4−9x3+15x221 x ^ { 4 } - 9 x ^ { 3 } + 15 x ^ { 2 }21x4−9x3+15x2

Factor Out the Greatest Common Factor $21 x ^ { 4 } - 9 x ^ { 3 } + 15 x ^ { 2 }$