-4r2+r-1=0

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Solution for -4r2+r-1=0 equation: 



-4r^2+r-1=0

a = -4; b = 1; c = -1;
Δ = b2-4ac
Δ = 12-4·(-4)·(-1)
Δ = -15
Delta is less than zero, so there is no solution for the equation

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