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x2-6.5x+42=0
We add all the numbers together, and all the variables
x^2-6.5x+42=0
a = 1; b = -6.5; c = +42;
Δ = b2-4ac
Δ = -6.52-4·1·42
Δ = -125.75
Delta is less than zero, so there is no solution for the equation
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