WAEC - Mathematics (2015 - No. 8)
Factorize completely: 6ax - 12by - 9ay + 8bx
(2a - 3b)(4x + 3y)
(3a + 4b)(2x - 3y)
(3a - 4b)(2x + 3y)
(2a + 3b)(4x -3y)
Forklaring
6ax - 12by - 9ay + 8bx
= 6ax - 9ay + 8bx - 12by
= 3a(2x - 3y) + 4b(2x - 3y)
= (3a + 4b)(2x - 3y)
= 6ax - 9ay + 8bx - 12by
= 3a(2x - 3y) + 4b(2x - 3y)
= (3a + 4b)(2x - 3y)