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x2-5x+6400=0
We add all the numbers together, and all the variables
x^2-5x+6400=0
a = 1; b = -5; c = +6400;
Δ = b2-4ac
Δ = -52-4·1·6400
Δ = -25575
Delta is less than zero, so there is no solution for the equation
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