Perform the division.
-$\frac { 12 \mathrm { r } ^ { 7 } - 20 \mathrm { r } ^ { 4 } } { 4 \mathrm { r } }$
A) $12 r ^ { 6 } - 20 r ^ { 3 }$
B) $3 r ^ { 7 } - 5 r ^ { 4 }$
C) $3 r ^ { 8 } - 5 r ^ { 5 }$
D) $3 r ^ { 6 } - 5 r ^ { 3 }$

Question

Quizplus · Accepted Answer

To divide the given expression by $4r$, divide each term in the numerator by $4r$. This gives $ \frac{12r^7}{4r} - \frac{20r^4}{4r} = 3r^{6} - 5r^{3}$.

Perform the Division 12r7−20r44r\frac { 12 \mathrm { r } ^ { 7 } - 20 \mathrm { r } ^ { 4 } } { 4 \mathrm { r } }4r12r7−20r4​

Perform the Division $\frac { 12 \mathrm { r } ^ { 7 } - 20 \mathrm { r } ^ { 4 } } { 4 \mathrm { r } }$