Question 1177588
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Make x the the subject of the formula
A=X(2X-N)-X
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Make x the the subject of the formula
a=x(2x-n)-x
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{{{2x^2-nx-x-a=0}}}

{{{2x^2-(n+1)x-a=0}}}


general solution formula for quadratic equation

{{{x=((n+1)+- sqrt((-(n+1))^2-4*2*(-a)))/4}}}

{{{x=(n+1+- sqrt(n^2+2n+1+8a))/4}}}