b(8-4b)=30

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Solution for b(8-4b)=30 equation: 



b(8-4b)=30

We move all terms to the left:

b(8-4b)-(30)=0

We add all the numbers together, and all the variables

b(-4b+8)-30=0

We multiply parentheses

-4b^2+8b-30=0

a = -4; b = 8; c = -30;
Δ = b2-4ac
Δ = 82-4·(-4)·(-30)
Δ = -416
Delta is less than zero, so there is no solution for the equation

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