(x + 6)(x + 1) = 0 so x = either -1 or -6
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x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
x2+7x+3 = 0 Using the quadratic equation formula the solutions are:- x = -6.541381265 or x = -0.4586187349
x2 + 7x = 0 => x*(x + 7) = 0 => x = 0 or x + 7 = 0 so that x = 0 or x = -7
x2-7x+12 = 0 (x-3)(x-4) = 0x=3,4
x2- 7x + 6 = 0 factor, (x-6)(x-1) = 0 x = 6 x = 1