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Δ=b²-4ac=(-3)²-4*1*2=9-8=1
√Δ=1
x₁=-b+√Δ/2a=3+1/2=4/2=2
x₂=-b-√Δ/2a=3-1/2=2/2=1
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a=1
b=-3
c=2
Δ=b²-4ac
Δ=(-3)²-4*1*2
Δ=9-8
Δ=1
x₁=-b-√Δ /2a
x=3-1 /2
x₁=2/2
x₁=1
x₂=-b+√Δ /2a
x₂=3+1 /2
x₂=4/2
x₂=2