若a2+b2=6,则式子(3a2-2ab-b2)-(a2-2ab-3b3)=______.
若a2+b2=6,则式子(3a2-2ab-b2)-(a2-2ab-3b3)=______.
化简:a2-3ab+4b2-(2b2-3ab-3a2)=______.
若a2+2b2=5,则多项式(3a2-2ab+b2)-(a2-2ab-3b2)的值是______.
(3a2-3ab+2b2)+(a2+4ab-2b2)=4a2+ab+b2
若关于a,b的多项式3(a2-2ab-b2)-(a2+mab+2b2)中不含有ab项,则m=______.
若a2+ab=4,ab+b2=-1,则a2-b2=______,a2+2ab+b2=______.
若a2+ab=5,ab+b2=4,则a2+2ab+b2的值为______.
a2+b2=2,那么代数式(a2-2ab-3b2)-(3a-2ab-b2)的值是?
(a2-b2)/(a2+2ab+b2)*(a3+b3)
已知a2++ab=3,ab+b2=1,试求a2+2ab+b2,a2-b2的值
已知a2-ab=8,ab-b2=-4,则a2-b2=______,a2-2ab+b2=______.
已知代数式3a2+(4ab-a2)-2(a2+2ab-b2).