3x^2+5+7=0

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Solution for 3x^2+5+7=0 equation: 



3x^2+5+7=0

We add all the numbers together, and all the variables

3x^2+12=0

a = 3; b = 0; c = +12;
Δ = b2-4ac
Δ = 02-4·3·12
Δ = -144
Delta is less than zero, so there is no solution for the equation

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