Question 8

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waecmaths question: 

Factorize completely $6ax-12by-9ay+8bx$  

Option A: 

$(2a-3b)(4x+3y)$

Option B: 

$(3a+4b)(2x-3y)$

Option C: 

$(3a-4b)(2x+3y)$

Option D: 

$(2a+3b)(4x-3y)$

waecmaths solution: 

$\begin{align}  & 6ax-12by-9ay+8bx=6ax+8bx-12by-9ay \\ & 6ax-12by-9ay+8bx=2x(3a+4b)-3y(4b+3a) \\ & 6ax-12by-9ay+8bx=(3a+4b)(2x-3y) \\\end{align}$

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