|a-√2|+b²-2b+1=0即|a-√2|+(b-1)²=0∵|a-√2|≥0,(b-1)²≥0∴要使两个非负数之和为0,必须使得两者都为0即a-√2=0,b-1=0解得：a=√2,b=1(a^4-a²b²)/(a²-ab)原式=(a²-ab)(a²...