factorization help?

0 ⤊

i need help completing the factorization

x^2 + 6x - 7 = (x + 7 ) . ________

2007-04-30 19:12:00 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

(x-1)

Because -1 * 7 = -7 (the last term) & 7 + -1 = 6 (the coeffient of the 2nd term)

2007-04-30 19:16:29 · answer #1 · answered by SusanB 5 · 0⤊ 0⤋

x^2 + 6x - 7 = x + 7
group similar terms(i.e taking x & 7 to L.H.S)
x^2 +6x - x -7 - 7 = 0
x^2 + 5x - 14 = 0
x^2 + 7x - 2x - 14 = 0
x(x+7) - 2(x+7) = 0
(x+7) (x-2) = 0
thus, x= -7,2

2007-05-01 02:22:06 · answer #2 · answered by sweety 2 · 0⤊ 0⤋

(x+7)(x-1)

2007-05-01 02:22:31 · answer #3 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋