6x + 9x^3 = 3x*(2 + 3x^2)
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x + 2x + 6x = 9x
3x + 6x +1 = 10 9x = 10 - 1 9x = 9 x = 1
-4
3x. 15x - 9x = 6x 9x - 6x = 3x 6x - 3x = 3x 3x - 3x = 0
if you want to factorise it then it will become (2x + 5)(x + 2) if it was equal to something then you would work it out differently. hope this helps