x(x+4)(x+5)=720

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Solution for x(x+4)(x+5)=720 equation: 



x(x+4)(x+5)=720

We move all terms to the left:

x(x+4)(x+5)-(720)=0

We multiply parentheses ..

x(+x^2+5x+4x+20)-720=0

We multiply parentheses

x^3+5x^2+4x^2+20x-720=0

We do not support expression: x^3

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