2t^2-根号2倍t-2=0

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2t^2-根号2倍t-2=02t^2-根号2倍t-2=02t^2-根号2倍t-2=0a=2,b=-√2,c=-2Δ=2+4×2×2=18t=(√2±3√2)/4t1=√2,t2=-1/2√2

2t^2-根号2倍t-2=0
2t^2-根号2倍t-2=0

2t^2-根号2倍t-2=0
a=2,b=-√2,c=-2
Δ=2+4×2×2=18
t=(√2±3√2)/4
t1=√2,t2=-1/2√2