若分式方程:①x+2/x=3,②x+6/x+5,③x+12/x=7 观察其根 猜想x+(n²+n/x)=2n+1

问题描述:

若分式方程:①x+2/x=3,②x+6/x+5,③x+12/x=7 观察其根 猜想x+(n²+n/x)=2n+1
是猜想:x+(n²+n)/x=2n+1

解①式x+2÷x=3 x²+2=3xx²-3x+2=0(x-1)(x-2)=0x=1或x=2解②式x+6÷x=5x²+6=5xx²-5x+6=0(x-2)(x-3)=0x=2或x=3解③式x+12÷x=7x²+12=7xx²-7x+12=0(x-3)(x-4)=0x=3或x=4则猜想 x+(n²...