Simplify the expression. Assume all variables represent positive real numbers.
-$\sqrt [ 3 ] { 27 y } - \sqrt [ 3 ] { 128 y }$
A) $4 \sqrt [ 3 ] { 2 y } - 3 \sqrt [ 3 ] { y }$
B) $3 \sqrt [ 3 ] { y } - 4 \sqrt [ 3 ] { 2 y }$
C) $3 - 4 \sqrt [ 3 ] { 2 }$
D) $7\sqrt [ 3 ] { y }$

Question

Quizplus · Accepted Answer

The expression simplifies to $3 \sqrt [ 3 ] { y } - 4 \sqrt [ 3 ] { 2 y }$ because $\sqrt [ 3 ] { 27 y } = 3\sqrt [ 3 ] { y }$ and $\sqrt [ 3 ] { 128 y } = 4\sqrt [ 3 ] { 2 y }$.

Simplify the Expression 27y3−128y3\sqrt [ 3 ] { 27 y } - \sqrt [ 3 ] { 128 y }327y​−3128y​

Simplify the Expression $\sqrt [ 3 ] { 27 y } - \sqrt [ 3 ] { 128 y }$