设有运算规则:a*b=a乘b-a-b=1 若:x*x=100,求x.x*x-x-x+1=100x^2-2x=99[x-1]^2=100x-1=+/-10x1=11x2=-9
x*x=x^2-2x-1=100x^2-2x-101=0x=1+√102或X=1-√102