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(^3-^2+4-4)D=0
We multiply parentheses
D^2+D^2+4D-4D=0
We add all the numbers together, and all the variables
2D^2=0
a = 2; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·2·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$D=\frac{-b}{2a}=\frac{0}{4}=0$
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