-5x^2-30x-405=0

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Solution for -5x^2-30x-405=0 equation: 



-5x^2-30x-405=0

a = -5; b = -30; c = -405;
Δ = b2-4ac
Δ = -302-4·(-5)·(-405)
Δ = -7200
Delta is less than zero, so there is no solution for the equation

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