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3x(2-7x)(x+11)=0
We add all the numbers together, and all the variables
3x(-7x+2)(x+11)=0
We multiply parentheses ..
3x(-7x^2-77x+2x+22)=0
We multiply parentheses
-21x^3-231x^2+6x^2+66x=0
We do not support expression: x^3
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