Factoring a Trinomial?

Question

anonymous · Answer

$$12x ^{2}-31x+7$$

jim_thompson5910 · Answer

have you learned the quadratic formula?

anonymous · Answer

Yes, I've gotten every other question correct, it's just this one question that i'm getting wrong.

jim_thompson5910 · Answer

ok use the quadratic formula to find the solutions to 12x^2 - 31x + 7 = 0

tell me what those roots are

anonymous · Answer

anonymous · Answer

this will help you so much its a trick where you can solve any trinomial

anonymous · Answer

basically you times the first term by last term which in ur case is 12 and 7

anonymous · Answer

$$12 \times 7 = 84$$

anonymous · Answer

now you need to find two factors of 84 which if multiply gives you 84 and when add gives you -31

anonymous · Answer

so if you $$28 \times 3 = 84$$

anonymous · Answer

now in order to get -31 these two number should be -28 and -3

anonymous · Answer

$$(-28) + (-3)$$

anonymous · Answer

now you equation will be $$12x ^{2} -3x -28x +7$$

anonymous · Answer

now only thing you have to do is factor it , can u plz do that if u have trouble i ll help u

skullpatrol · Answer

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