Add or subtract.
-$7 \sqrt [ 3 ] { 2 } - 4 \sqrt { 8 } + 9 \sqrt [ 3 ] { 2 } + 2 \sqrt { 8 }$
A) $14 \sqrt { 16 }$
B) $16 \sqrt [ 3 ] { 2 } - 2 \sqrt { 8 }$
C) $16 \sqrt [ 3 ] { 4 } - 2 \sqrt { 16 }$
D) $16 \sqrt { 2 } - 2 \sqrt { 8 }$

Question

Quizplus · Accepted Answer

First, simplify the terms: $4\sqrt{8} = 4\sqrt{2^3} = 4 \cdot 2 = 8$. Then, combine like terms: $7\sqrt[3]{2} + 9\sqrt[3]{2} = 16\sqrt[3]{2}$ and $-4\sqrt{8} + 2\sqrt{8} = -2\sqrt{8}$. So, the correct expression is $16\sqrt[3]{2} - 2\sqrt{8}$.

Add or Subtract 723−48+923+287 \sqrt [ 3 ] { 2 } - 4 \sqrt { 8 } + 9 \sqrt [ 3 ] { 2 } + 2 \sqrt { 8 }732​−48​+932​+28​

Add or Subtract $7 \sqrt [ 3 ] { 2 } - 4 \sqrt { 8 } + 9 \sqrt [ 3 ] { 2 } + 2 \sqrt { 8 }$