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3x^2-4x+10x+5=0
We add all the numbers together, and all the variables
3x^2+6x+5=0
a = 3; b = 6; c = +5;
Δ = b2-4ac
Δ = 62-4·3·5
Δ = -24
Delta is less than zero, so there is no solution for the equation
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