-5r^2+4r=1

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Solution for -5r^2+4r=1 equation: 



-5r^2+4r=1

We move all terms to the left:

-5r^2+4r-(1)=0

a = -5; b = 4; c = -1;
Δ = b2-4ac
Δ = 42-4·(-5)·(-1)
Δ = -4
Delta is less than zero, so there is no solution for the equation

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