How do you factor #6ab - 21 + 14a - 9b#?
1 Answer
Nov 25, 2015
Change the order of the terms then factor by grouping to find:
#6ab-21+14a-9b=(3b+7)(2a-3)#
Explanation:
#6ab-21+14a-9b#
#=6ab-9b+14a-21#
#=(6ab-9b)+(14a-21)#
#=3b(2a-3)+7(2a-3)#
#=(3b+7)(2a-3)#
