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X^2-6X+14=-7
We move all terms to the left:
X^2-6X+14-(-7)=0
We add all the numbers together, and all the variables
X^2-6X+21=0
a = 1; b = -6; c = +21;
Δ = b2-4ac
Δ = -62-4·1·21
Δ = -48
Delta is less than zero, so there is no solution for the equation
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