30^2+r^2=r+18^2

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Solution for 30^2+r^2=r+18^2 equation: 



30^2+r^2=r+18^2

We move all terms to the left:

30^2+r^2-(r+18^2)=0

We add all the numbers together, and all the variables

r^2-(r+18^2)+900=0

We get rid of parentheses

r^2-r+900-18^2=0

We add all the numbers together, and all the variables

r^2-1r+576=0

a = 1; b = -1; c = +576;
Δ = b2-4ac
Δ = -12-4·1·576
Δ = -2303
Delta is less than zero, so there is no solution for the equation

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