9^2+r^2=6^2+r^

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Solution for 9^2+r^2=6^2+r^ equation: 



9^2+r^2=6^2+r^

We move all terms to the left:

9^2+r^2-(6^2+r^)=0

We add all the numbers together, and all the variables

r^2-(6^2+r^)+81=0

We get rid of parentheses

r^2-r^+81-6^2=0

We add all the numbers together, and all the variables

r^2-1r+45=0

a = 1; b = -1; c = +45;
Δ = b2-4ac
Δ = -12-4·1·45
Δ = -179
Delta is less than zero, so there is no solution for the equation

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