Question 687792
4x(15x^2) + 4x(-7x) + 4x(-2) + 9(15x^2) + 9(-7x) + 9(-2) = 0
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60x^3 + -28x^2 + -8x + 135x^2 + -63x + -18 = 0
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{{{highlight_green(60x^3 + 107x^2 - 71x - 18 = 0)}}}
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(4x+9)(15x^2-7x-2)=0
(4x+9)(5x+1)(3x-2)=0
x = {{{-9/4}}}, {{{-1/5}}} and {{{2/3}}}
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