你确定没抄错题?可能是（a²+2a+1）-(b4-2b+1)=0 (a+1)²-(b²-1)²=0(a+1+b-1)(a+1-b+1)=0 (a+b)(a-b+2)=0 a+b=0或a-b+2=0我没抄错（a²+2a-1）-(b4-2b²-1)=0a²+2a-1-b4+2b²+1=0a²+2a-b4+2b²=0(a²-b4)+(2a+2b²)=0(a+b²)(a-b²)+2(a+b²)=0(a+b²)(a-b²+2)=0a+b²=0或a-b²+2=0