Solve the equation x2-4x+6=0 by completing the square

x2-4x+6=0

We add all the numbers together, and all the variables

x^2-4x+6=0

a = 1; b = -4; c = +6;
Δ = b2-4ac
Δ = -42-4·1·6
Δ = -8
Delta is less than zero, so there is no solution for the equation

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