Factor by any method.
-$$81 k ^ { 2 } - 169 m ^ { 2 }$$
A) $( 9 \mathrm { k } - 13 \mathrm {~m} ) ^ { 2 }$
B) $( 9 \mathrm { k } + 13 \mathrm {~m} ) ^ { 2 }$
C) $( 81 \mathrm { k } + \mathrm { m } ) ( \mathrm { k } - 169 \mathrm {~m} )$
D) $( 9 k + 13 m ) ( 9 k - 13 m )$

Question

Quizplus · Accepted Answer

This expression is a difference of squares, factoring into $(9k)^2 - (13m)^2 = (9k + 13m)(9k - 13m)$.

Factor by Any Method 81k2−169m281 k ^ { 2 } - 169 m ^ { 2 }81k2−169m2

Factor by Any Method $81 k ^ { 2 } - 169 m ^ { 2 }$