SOLUTION: make X the subject of the formula A= X(2X-N)-X

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Question 1162789: make X the subject of the formula
A= X(2X-N)-X
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
make X the subject of the formula
A= X(2X-N)-X
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a = 2x^2 - nx - x
2x^2 -(n+1)x - a = 0
It's a quadratic in x
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x+=+%28n%2B1%29%2F4+%2B+sqrt%28%28n%2B1%29%5E2+-+8a%29%2F4
x+=+%28n%2B1%29%2F4+-+sqrt%28%28n%2B1%29%5E2+-+8a%29%2F4