x/3+2=6
first, multiply everything by 3, to get rid of the fraction.
x + 6 = 18
Then subtract the 6 from the left and subtract from the right.
x = 12
and there you have it
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x3 - 2x2 + x - 2 =(x - 2)(x2 + 1)
x3 + 12x2 - 5x = x(x2 + 12x - 5) = x(x + 6 - √41)(x + 6 + √41)
x3 - 4x2 + x + 6 = (x + 1)(x - 2)(x - 3)
x3 - 2x2 - 4x + 8 = (x2 - 4)(x - 2) = (x + 2)(x - 2)(x - 2)
x3 - 10x2 + 24x = x(x2 - 10x + 24) = x(x2 - 4x - 6x + 24) = x[ x(x - 4) - 6(x - 4) ] = x(x - 6)(x - 4)