若a2n+1b2与5a3n-2b2是同类项,则n=______.
已知代数式2a3bn+1与-3am-2b2是同类项,则m+2n=______.
已知代数式2a3bn+1与-3am+2b2是同类项,则2m+3n=______.
10.若a2n=3,则(2a3n)2=____.
若a2+2b2=5,则多项式(3a2-2ab+b2)-(a2-2ab-3b2)的值是______.
若(a2+b2-1)2=16,则a2+b2值为______.
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______.
若单项式3x2yn与-2xmy3是同类项,则m+n=______.
已知-2a+3b2=-7,则代数式9b2-6a+4的值是______.
若|a-2|+b2-2b+1=0,则a+b=______.
若a、b∈R,且4≤a2+b2≤9,则a2-ab+b2的最大值与最小值之和是______.
已知a2-ab=8,ab-b2=-4,则a2-b2=______,a2-2ab+b2=______.