2r^2+6=5r

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Solution for 2r^2+6=5r equation: 



2r^2+6=5r

We move all terms to the left:

2r^2+6-(5r)=0

a = 2; b = -5; c = +6;
Δ = b2-4ac
Δ = -52-4·2·6
Δ = -23
Delta is less than zero, so there is no solution for the equation

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