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-4x^2-x-8=0
We add all the numbers together, and all the variables
-4x^2-1x-8=0
a = -4; b = -1; c = -8;
Δ = b2-4ac
Δ = -12-4·(-4)·(-8)
Δ = -127
Delta is less than zero, so there is no solution for the equation
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