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10x^2+12x-2=-12
We move all terms to the left:
10x^2+12x-2-(-12)=0
We add all the numbers together, and all the variables
10x^2+12x+10=0
a = 10; b = 12; c = +10;
Δ = b2-4ac
Δ = 122-4·10·10
Δ = -256
Delta is less than zero, so there is no solution for the equation
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