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x(x-2x)=16
We move all terms to the left:
x(x-2x)-(16)=0
We add all the numbers together, and all the variables
x(-1x)-16=0
We multiply parentheses
-1x^2-16=0
a = -1; b = 0; c = -16;
Δ = b2-4ac
Δ = 02-4·(-1)·(-16)
Δ = -64
Delta is less than zero, so there is no solution for the equation
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