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X2+7X+28.5=0
We add all the numbers together, and all the variables
X^2+7X+28.5=0
a = 1; b = 7; c = +28.5;
Δ = b2-4ac
Δ = 72-4·1·28.5
Δ = -65
Delta is less than zero, so there is no solution for the equation
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