Factor
2007-07-16 03:09:48 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
4x² - x - 3 = 0
4x² - 4x + 3x - 3 = 0
4x(x - 1) + 3(x - 1) = 0
(4x + 3)(x - 1) = 0
- - - - - - -s-
2007-07-16 03:48:43 · answer #1 · answered by SAMUEL D 7 · 1⤊ 0⤋
You have to look at the factors. 4x^2 can be x and 4x or 2x and 2x. The last term can be -1 and +3 or +1 and -3.
The 2x can be ruled out since it would make the middle term +-4
4x and x for the first term.
If you put the +-3 where it multiplies the 4x term, your middle term will be +-11
That leave putting the +-3 term with the 4x
(4x+3)(x-1)
checking to make sure
4x^2-4x+3x-3=4x^2-x-3
checks out.
I hope the explanation is clear enough.
2007-07-16 10:35:20 · answer #2 · answered by gordonmorrison 6 · 0⤊ 0⤋
(4x+3)(x-1)
2007-07-16 10:12:13 · answer #3 · answered by gebobs 6 · 0⤊ 0⤋