Question

how do you factor 6x^2-7x-3 using the ac-method?

Answer 1

i can factor it but ive never heard of the ac method

Answer 2

anyway i'll use the method i learned a while back
6 * -3 = -18
now we look for factors of -18 which will add up to the middle number of the trinomial - that is -7

Answer 3

so we can write
6x^2 + 2x - 9x - 3
and factoring in pairs
= 2x(3x + 1) - 3(3x + 1)
= (3x + 1)(2x - 3)



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