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x^2-3x+4=-12
We move all terms to the left:
x^2-3x+4-(-12)=0
We add all the numbers together, and all the variables
x^2-3x+16=0
a = 1; b = -3; c = +16;
Δ = b2-4ac
Δ = -32-4·1·16
Δ = -55
Delta is less than zero, so there is no solution for the equation
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