0=-x^2+3x-7

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Solution for 0=-x^2+3x-7 equation: 



0=-x^2+3x-7

We move all terms to the left:

0-(-x^2+3x-7)=0

We add all the numbers together, and all the variables

-(-x^2+3x-7)=0

We get rid of parentheses

x^2-3x+7=0

a = 1; b = -3; c = +7;
Δ = b2-4ac
Δ = -32-4·1·7
Δ = -19
Delta is less than zero, so there is no solution for the equation

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