Y=x2-4x+7

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Solution for Y=x2-4x+7 equation:



=Y2-4Y+7
We move all terms to the left:
-(Y2-4Y+7)=0
We add all the numbers together, and all the variables
-(+Y^2-4Y+7)=0
We get rid of parentheses
-Y^2+4Y-7=0
We add all the numbers together, and all the variables
-1Y^2+4Y-7=0
a = -1; b = 4; c = -7;
Δ = b2-4ac
Δ = 42-4·(-1)·(-7)
Δ = -12
Delta is less than zero, so there is no solution for the equation

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