-x^2+2x=9

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Solution for -x^2+2x=9 equation: 



-x^2+2x=9

We move all terms to the left:

-x^2+2x-(9)=0

We add all the numbers together, and all the variables

-1x^2+2x-9=0

a = -1; b = 2; c = -9;
Δ = b2-4ac
Δ = 22-4·(-1)·(-9)
Δ = -32
Delta is less than zero, so there is no solution for the equation

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