Factor completely.
-$169 k ^ { 2 } - 36 m ^ { 2 }$
A) $( 13 k - 6 m ) ^ { 2 }$
B) $( 13 \mathrm { k } + 6 \mathrm {~m} ) ^ { 2 }$
C) Prime
D) $( 13 k + 6 m ) ( 13 k - 6 m )$

Question

Quizplus · Accepted Answer

This expression is a difference of squares, and can be factored as follows: 
$$\begin{aligned}169 k ^ { 2 } - 36 m ^ { 2 } &= (13 k)^2 - (6 m)^2 \ &= (13 k + 6 m)(13 k - 6 m)\end{aligned}$$ 
Therefore, the correct answer is D.

Factor Completely 169k2−36m2169 k ^ { 2 } - 36 m ^ { 2 }169k2−36m2

Factor Completely $169 k ^ { 2 } - 36 m ^ { 2 }$