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9x^2+7=-31
We move all terms to the left:
9x^2+7-(-31)=0
We add all the numbers together, and all the variables
9x^2+38=0
a = 9; b = 0; c = +38;
Δ = b2-4ac
Δ = 02-4·9·38
Δ = -1368
Delta is less than zero, so there is no solution for the equation
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