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9q^2-5q=-4
We move all terms to the left:
9q^2-5q-(-4)=0
We add all the numbers together, and all the variables
9q^2-5q+4=0
a = 9; b = -5; c = +4;
Δ = b2-4ac
Δ = -52-4·9·4
Δ = -119
Delta is less than zero, so there is no solution for the equation
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