a(2a)(a+2)=90

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Solution for a(2a)(a+2)=90 equation: 



a(2a)(a+2)=90

We move all terms to the left:

a(2a)(a+2)-(90)=0

We multiply parentheses

a^3+2a^2-90=0

We do not support eapression: a^3

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