Asked by Robotic

factorise the following
m^2 - n^2 - mq - nq?
Answered by oobleck
m^2-n^2 = (m+n)(m-n)
-mq - nq = -q(m-n)
so, what do you think?
Answered by oobleck
oops
-mq-nq = -q(m+n)