x2+6x-7 = (x+7)(x-1) when factored
x2 + 5x - 6x = x2 - x = x(x - 1) which is zero when x = 0 or x = 1
It can't be factored because the discriminant is less than zero.
x2 + 6x = x*(x + 6)
-x2 + 6x + 16 = -(x2 - 6x - 16) = -(x - 8)(x + 2) = -(8 - x)(x + 2)
x = -3y = -14
x2 + 6x + 8 = (x + 4)(x + 2)
x3 + x2 - 6x + 4 = (x - 1)(x2 + 2x - 4)
x2 + 6x + 9 = 81 x2 + 6x = 72 x2 + 6x - 72 = 0 (x+12)(x-6) = 0 x= -12, 6 (two solutions)
x2 - 6x + 9 = zero(x - 3 )(x - 3 ) = zerox - 3 = ZeroX=3
x2 + 6x + 5 can be factored into (x+1) (x+5)
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