How do you factor 8a + 6ax - 21x - 28?

1 Answer
George C.
Sep 2, 2016

8a+6ax-21x-28 = (2a-7)(3x+4)

Explanation:

This will factor by grouping once we swap the first two terms:

8a+6ax-21x-28 = 6ax+8a-21x-28

color(white)(8a+6ax-21x-28) = (6ax+8a)-(21x+28)

color(white)(8a+6ax-21x-28) = 2a(3x+4)-7(3x+4)

color(white)(8a+6ax-21x-28) = (2a-7)(3x+4)

Related questions
See all questions in Factoring Completely
Impact of this question
1265 views around the world
You can reuse this answer
Creative Commons License