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-9x(-3x-2)=-30-4x
We move all terms to the left:
-9x(-3x-2)-(-30-4x)=0
We add all the numbers together, and all the variables
-9x(-3x-2)-(-4x-30)=0
We multiply parentheses
27x^2+18x-(-4x-30)=0
We get rid of parentheses
27x^2+18x+4x+30=0
We add all the numbers together, and all the variables
27x^2+22x+30=0
a = 27; b = 22; c = +30;
Δ = b2-4ac
Δ = 222-4·27·30
Δ = -2756
Delta is less than zero, so there is no solution for the equation
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