waecmaths question:
Factorize the expression $am+bn-an-bm$
Option A:
$(a-b)(m+n)$
Option B:
$(a+b)(m-n)$
Option C:
$(a+b)(m-n)$
Option D:
$(a+b)(m+n)$
waecmaths solution:
$\begin{align} & am+bn-an-bm \\ & am-an-mb+bn \\ & a(m-n)-b(m-n) \\ & (a-b)(m-n) \\ \end{align}$
maths year:
maths topics: