A=5/9x^2-x+4

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Solution for A=5/9x^2-x+4 equation: 



=5/9A^2-A+4

We move all terms to the left:

-(5/9A^2-A+4)=0



Domain of the equation: 9A^2-A+4)!=0

A∈R



We get rid of parentheses

-5/9A^2+A-4=0

We multiply all the terms by the denominator


A*9A^2-4*9A^2-5=0

Wy multiply elements

9A^3-36A^2-5=0

We do not support eApression: A^3

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