21x*2*20x+4=0

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Solution for 21x*2*20x+4=0 equation: 



21x*2*20x+4=0

Wy multiply elements

840x^2*2+4=0

Wy multiply elements

1680x^2+4=0

a = 1680; b = 0; c = +4;
Δ = b2-4ac
Δ = 02-4·1680·4
Δ = -26880
Delta is less than zero, so there is no solution for the equation

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