Factor. $150 r ^ { 2 } - 30 T ^ { 2 }$
A) $30 \left( 5 r ^ { 2 } - T ^ { 2 } \right)$
B) $30 \left( 150 r ^ { 2 } - T ^ { 2 } \right)$
C) $30 \left( 5 r ^ { 3 } - T \right)$
D) $30 \left( 5 r - T ^ { 2 } \right)$
E) $T \left( 5 r ^ { 2 } - T ^ { 2 } \right)$

Question

Quizplus · Accepted Answer

We can factor out a common factor of 30 and then use the difference of squares formula to obtain $30(5r+T)(5r-T)$ which cannot be factored further. Therefore, the answer is A.

Factor 150r2−30T2150 r ^ { 2 } - 30 T ^ { 2 }150r2−30T2

Factor $150 r ^ { 2 } - 30 T ^ { 2 }$