factor: 2x^2 + 2x - 8?

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factor: 2x^2 + 2x - 8?

2006-10-24 13:54:45 · 3 answers · asked by Dancinfool_08 2 in Science & Mathematics ➔ Mathematics

3 answers

use quadratic formula

(-2+square root of(4-4(2)(-8) ) divided by 4
or (-2-square root of(4-4(2)(-8) ) divided by 4
=
(-2+square root of 68 ) divided by 4
(-2-square root of 68 ) divided by 4

2006-10-24 14:00:35 · answer #1 · answered by JV 3 · 0⤊ 0⤋

take out a factor of 2 to simplify

x^2 + x - 4 = 0

(x-2)(x+2)=0

x-2=0 x=2

x+2=0 x=-2

2006-10-24 21:01:12 · answer #2 · answered by krayz 2 · 0⤊ 0⤋

2(x^2+x-4)

2006-10-24 21:00:44 · answer #3 · answered by Sara K 1 · 0⤊ 0⤋