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x^2-5x^2-6=0
We add all the numbers together, and all the variables
-4x^2-6=0
a = -4; b = 0; c = -6;
Δ = b2-4ac
Δ = 02-4·(-4)·(-6)
Δ = -96
Delta is less than zero, so there is no solution for the equation
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