Okay so you split 9ab + 12ax - 6b - 8x <span> into two 2-term polynomials </span> + 12ax + 9ab and - 6b - 8x doesn't look that good to me so lest try other one : 9ab + 12ax and - 6b - 8x looks good for now
<span> </span> Pull out from each binomial separately 9ab + 12ax = 3a • (3b + 4x) - 6b - 8x = - 2 • (3b + 4x)
<span> </span> Add up to arrive at the desired factorization so now you have <span> (3a - 2) • (3b + 4x) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Hope that Helped!</span>
