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(0.5x+1)*x+40=0
We multiply parentheses
0x^2+x+40=0
We add all the numbers together, and all the variables
x^2+x+40=0
a = 1; b = 1; c = +40;
Δ = b2-4ac
Δ = 12-4·1·40
Δ = -159
Delta is less than zero, so there is no solution for the equation
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