(2004•威海)若a2-2ab+b2+2(a-b)+1=0,则a-b=______.
已知a2+2ab+b2+(a-2)2=0,则b=______.
若关于a,b的多项式3(a2-2ab-b2)-(a2+mab+2b2)中不含有ab项,则m=______.
3a2+ab-2b2=0,求a/b-b/a-(a2+b2)/ab (a,b不等于0)
若(a+b)2=A,(a-b)2=B,则a2+b2=______,ab=______.
已知实数a、b满足(a+b)2=1和(a-b)2=25,则a2+b2+ab=______.
已知a、b实数且满足(a2+b2)2-(a2+b2)-6=0,则a2+b2的值为______.
若a=2009,b=-2010,则a2+2b2+3ab=______.
若a+b=-3,ab=2,则a2+b2=______.
若a+b=4,则a2+2ab+b2的值为______.
已知a2+b2=2,a+b=1,则ab的值为______.
已知A=a2-ab,B=ab+b2,则A+B=______,A-B=______,3A-2B=______.
已知A=a2-2ab+b2,B=-a2-3ab-b2,求:(1)A+B;(2)2A-3B.