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4.2x^2-x+2.7=0
We add all the numbers together, and all the variables
4.2x^2-1x+2.7=0
a = 4.2; b = -1; c = +2.7;
Δ = b2-4ac
Δ = -12-4·4.2·2.7
Δ = -44.36
Delta is less than zero, so there is no solution for the equation
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