4X(21-3h)h=5

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Solution for 4X(21-3h)h=5 equation: 



4X(21-3X)X=5

We move all terms to the left:

4X(21-3X)X-(5)=0

We add all the numbers together, and all the variables

4X(-3X+21)X-5=0

We multiply parentheses

-12X^3+84X^2-5=0

We do not support eXpression: X^3

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