-2b(b-3)-4=18

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Solution for -2b(b-3)-4=18 equation: 



-2b(b-3)-4=18

We move all terms to the left:

-2b(b-3)-4-(18)=0

We add all the numbers together, and all the variables

-2b(b-3)-22=0

We multiply parentheses

-2b^2+6b-22=0

a = -2; b = 6; c = -22;
Δ = b2-4ac
Δ = 62-4·(-2)·(-22)
Δ = -140
Delta is less than zero, so there is no solution for the equation

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