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3x^2-9x=-8
We move all terms to the left:
3x^2-9x-(-8)=0
We add all the numbers together, and all the variables
3x^2-9x+8=0
a = 3; b = -9; c = +8;
Δ = b2-4ac
Δ = -92-4·3·8
Δ = -15
Delta is less than zero, so there is no solution for the equation
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