-7r^2-2r-4=0

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Solution for -7r^2-2r-4=0 equation: 



-7r^2-2r-4=0

a = -7; b = -2; c = -4;
Δ = b2-4ac
Δ = -22-4·(-7)·(-4)
Δ = -108
Delta is less than zero, so there is no solution for the equation

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