(3a)(2a+20)(4a-20)=180

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Solution for (3a)(2a+20)(4a-20)=180 equation: 



(3a)(2a+20)(4a-20)=180

We move all terms to the left:

(3a)(2a+20)(4a-20)-(180)=0

We multiply parentheses ..

3a(+8a^2-40a+80a-400)-180=0

We multiply parentheses

24a^3-120a^2+240a^2-1200a-180=0

We do not support eapression: a^3

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