Question

How do you factor this..?

Answer 1

\[3x ^{2}+8x-16\]

Answer 2

please explain

Answer 3

i dont know how to explain factoring..i usually try and try until i succeed but ill try explaining...

think of factors of 3...it's prime so there's only one..

Answer 4

so you just guess and check?

Answer 5

there is another way...

Answer 6

Yes, that is what I'm looking for :P

Answer 7

Do you know it?

Answer 8

hmm..i saw it from other people and i did learn it...it's kinda trial and error too but faster trial and error

Answer 9

oh do you know it accurately?

Answer 10

accurately? you mean mastered? no...but i can use it sometimes...i saw it from @Hero maybe he can explain the technique better

Answer 11

Oh hm. I just have I test coming up, and would like to know this so yeah lol.

Answer 12

Hint:

3x^2 + 8x - 16
3x^2 + 12x - 4x - 16

Answer 13

3x(x + 4) - 4(x + 4)
(x+4)(3x - 4)

Answer 14

If you want to know how to factor by grouping like me, you might want to schedule some personal lessons.