Divide.
-$21 r ^ { 6 } - 35 r ^ { 3 }$ by $7 r$
A) $3 r ^ { 6 } - 5 r ^ { 3 }$
B) $21 r ^ { 5 } - 35 r ^ { 2 }$
C) $3 r ^ { 5 } - 5 r ^ { 2 }$
D) $3 r ^ { 7 } - 5 r ^ { 4 }$

Name: Divide. -$21 r ^ { 6 } - 35 r ^ { 3 }$ by $7 r$ A) $3 r ^ { 6 } - 5 r ^ { 3 }$ B) $21 r ^ { 5 } - 35 r ^ { 2 }$ C) $3 r ^ { 5 } - 5 r ^ { 2 }$ D) $3 r ^ { 7 } - 5 r ^ { 4 }$
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Question

Quizplus · Accepted Answer

Dividing each term by $7r$ gives $3 r ^ { 5 } - 5 r ^ { 2 }$, since $21 r ^ { 6 } / 7 r = 3 r ^ { 5 }$ and $-35 r ^ { 3 } / 7 r = -5 r ^ { 2 }$.

Divide - 21r6−35r321 r ^ { 6 } - 35 r ^ { 3 }21r6−35r3

Divide
- $21 r ^ { 6 } - 35 r ^ { 3 }$