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9w^2+6w=-19
We move all terms to the left:
9w^2+6w-(-19)=0
We add all the numbers together, and all the variables
9w^2+6w+19=0
a = 9; b = 6; c = +19;
Δ = b2-4ac
Δ = 62-4·9·19
Δ = -648
Delta is less than zero, so there is no solution for the equation
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