S(r)=5r^2-5r+5

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Solution for S(r)=5r^2-5r+5 equation: 



(S)=5S^2-5S+5

We move all terms to the left:

(S)-(5S^2-5S+5)=0

We get rid of parentheses

-5S^2+S+5S-5=0

We add all the numbers together, and all the variables

-5S^2+6S-5=0

a = -5; b = 6; c = -5;
Δ = b2-4ac
Δ = 62-4·(-5)·(-5)
Δ = -64
Delta is less than zero, so there is no solution for the equation

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