若|a+2|+(b-3)2=0,则3ab-4b2=______.
若|a+2|+(b-3)2=0,则3ab-4b2=______.
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a=2009,b=-2010,则a2+2b2+3ab=______.
若a+b=-3,ab=2,则a2+b2=______.
已知A=a2-ab,B=ab+b2,则A+B=______,A-B=______,3A-2B=______.
已知a2+2ab+b2+(a-2)2=0,则b=______.
若a+b=4,则a2+2ab+b2的值为______.
化简:a2-3ab+4b2-(2b2-3ab-3a2)=______.
若实数a、b、c满足a2+b2+c2+4≤ab+3b+2c,则200a+9b+c=______.
3a2+ab-2b2=0,求a/b-b/a-(a2+b2)/ab (a,b不等于0)
已知a、b满足a+b=3,ab=2,则a2+b2=______.
已知a+b=2,ab=-1,则3a+ab+3b=______;a2+b2=______.