若|a-2|+b2-2b+1=0,则a+b=______.
若|a-2|+b2-2b+1=0,则a+b=______.
如果实数a,b满足条件a2+b2=1,|1-2a+b|+2a+1=b2-a2,则a+b=______.
若a+2b=-3,a2-4b2=21,则a-2b+1=______.
已知a-b=1,则a2-b2-2b的值为______.
若a+b=1,a-b=2006,则a2-b2=______.
已知A=a2-ab,B=ab+b2,则A+B=______,A-B=______,3A-2B=______.
若(a+b)2=A,(a-b)2=B,则a2+b2=______,ab=______.
若a-b=13,a2-b2=39,则(a+b)2=______.
a的相反数是2b+1,b的相反数是3a+1,则a2+b2=______.
已知a2+2ab+b2+(a-2)2=0,则b=______.
若a=2009,b=-2010,则a2+2b2+3ab=______.
若a+b=-3,ab=2,则a2+b2=______.