assuming the gap before x-2 is a +, then x+x-2=7x, so 2x-2=7x, so 5x=-2, so x=-.4
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x2 + 7x = 0 => x*(x + 7) = 0 => x = 0 or x + 7 = 0 so that x = 0 or x = -7
x2-7x-18 (x-9) (x+2) x=9 x=-2 X= either 9 or -2
Assuming that what you're looking for is the values of x: x2 + 7x = 8 x2 + 7x - 8 = 0 (x + 8)(x - 1) = 0 x is equal to either -8 or 1.
x2- 7x + 6 = 0 factor, (x-6)(x-1) = 0 x = 6 x = 1
x2-7x+12 = 0 (x-3)(x-4) = 0x=3,4