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140=2(3x)2(3x+10)
We move all terms to the left:
140-(2(3x)2(3x+10))=0
We calculate terms in parentheses: -(23x2(3x+10)), so:
23x2(3x+10)
We multiply parentheses
69x^3+230x^2
We do not support expression: x^3
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