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0=x²+3x-4/√2-(x) /*√2-(x)
0=x²+3x-4
Liczysz deltę
Δ=b²-4ac
Δ=3²-4*1*(-4)
Δ=9-(-16)
Δ=25
√Δ=5
Miejsca zerowe
X1=-b+√Δ/2a=-3+5/2=2/2=1
X2=-b-√Δ/2a=-3-5/2=-8/2=-4
X1=1
X2=-4