-8r(r-3r)-4(r-1)=0

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Solution for -8r(r-3r)-4(r-1)=0 equation: 



-8r(r-3r)-4(r-1)=0

We add all the numbers together, and all the variables

-8r(-2r)-4(r-1)=0

We multiply parentheses

16r^2-4r+4=0

a = 16; b = -4; c = +4;
Δ = b2-4ac
Δ = -42-4·16·4
Δ = -240
Delta is less than zero, so there is no solution for the equation

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