若2a2-2ab+b2+4a+4=0,则a2+b2=
若2a2-2ab+b2+4a+4=0,则a2+b2=
(3a2-3ab+2b2)+(a2+4ab-2b2)=4a2+ab+b2
若a2+ab=4,ab+b2=-1,则a2-b2=______,a2+2ab+b2=______.
若a2+2ab=-10,b2+2ab=16,则多项式a2+4ab+b2与a2-b2的值分别为( )
先化简,在求值:4ab-3b2-{【a2+b2】-{a2-b2】};其中·a=-2,b=3
ab(a2+b2)x2-(a+b2)x+(a2-b2)/(a2+b2)=0
若a2+ab=5,ab+b2=4,则a2+2ab+b2的值为______.
已知a2+b2=5,ab=-3,则代数式4a2-4b2+3ab-2a2+6b2+2ab的值是 .
已知a2-ab=8,ab-b2=-4,则a2-b2=______,a2-2ab+b2=______.
已知(a2+b2)2-(a2+b2)-6=0则a2+b2的值为多少?
化简:a2-3ab+4b2-(2b2-3ab-3a2)=______.
若a+b=4,则a2+2ab+b2的值为______.