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8x^2=4x-9=0
We move all terms to the left:
8x^2-(4x-9)=0
We get rid of parentheses
8x^2-4x+9=0
a = 8; b = -4; c = +9;
Δ = b2-4ac
Δ = -42-4·8·9
Δ = -272
Delta is less than zero, so there is no solution for the equation
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