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=7/9(Y^2-2Y+1)+4
We move all terms to the left:
-(7/9(Y^2-2Y+1)+4)=0
Domain of the equation: 9(Y^2-2Y+1)+4)!=0We multiply all the terms by the denominator
Y∈R
-(7=0
We add all the numbers together, and all the variables
=0
Y=0/1
Y=0
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