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9x2 - 18x + 99(x2 - 2x + 1)==========
3x(6x - 1)
-5 + 12x = 18x + 7Subtract 7 from each side:-12 + 12x = 18xSubtract 12x from each side:-12 = 6xDivide each side by 6:-2 = x
The 'answer' is the number that 'x' has to be in order to make the statement true.18x + 3 = 12xSubtract 3 from each side of the equation:18x = 12x - 3Subtract 12x from each side:6x = -3Divide each side by 6 :x = - 1/2
As written, that's 3x^3 - 12x which factors to 3x(x - 2)(x + 2)