1/2(x+9)*x=68

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Solution for 1/2(x+9)*x=68 equation: 



1/2(x+9)*x=68

We move all terms to the left:

1/2(x+9)*x-(68)=0



Domain of the equation: 2(x+9)*x!=0

x∈R



We multiply all the terms by the denominator


-68*2(x+9)*x+1=0

Wy multiply elements

-136x^2(x+1=0

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