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2 2
2x-4-x +3x-2x-6 = 3x - 4x - 6
2(x²-4x+4)=x²-2x+3x-6
2x²-x²-8x+x+8+6=0
x²-7x+14=0
Δ=b²-4ac
Δ=(-7)²-4·1·14=1
√Δ=1
x₁=-b-√Δ/2a x₂=-b+√Δ/2a
x₁=7-1/2=3 x₂=7+1/2=4
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2 2
2x-4-x +3x-2x-6 = 3x - 4x - 6
2(x²-4x+4)=x²-2x+3x-6
2x²-x²-8x+x+8+6=0
x²-7x+14=0
Δ=b²-4ac
Δ=(-7)²-4·1·14=1
√Δ=1
x₁=-b-√Δ/2a x₂=-b+√Δ/2a
x₁=7-1/2=3 x₂=7+1/2=4