X=-2y^2+8y-7

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Solution for X=-2y^2+8y-7 equation: 



X=-2X^2+8X-7

We move all terms to the left:

X-(-2X^2+8X-7)=0

We get rid of parentheses

2X^2-8X+X+7=0

We add all the numbers together, and all the variables

2X^2-7X+7=0

a = 2; b = -7; c = +7;
Δ = b2-4ac
Δ = -72-4·2·7
Δ = -7
Delta is less than zero, so there is no solution for the equation

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