问题
填空题
计算:(4x3y3)4-3(x4y4)3=______;(4x+2y)(x+y)=______.
答案
(4x3y3)4-3(x4y4)3
=44(xy)12-3(xy)12
=(256-3)x12y12
=253x12y12;
(4x+2y)(x+y)
=4x2+4xy+2xy+2y2
=4x2+6xy+2y2.
计算:(4x3y3)4-3(x4y4)3=______;(4x+2y)(x+y)=______.
(4x3y3)4-3(x4y4)3
=44(xy)12-3(xy)12
=(256-3)x12y12
=253x12y12;
(4x+2y)(x+y)
=4x2+4xy+2xy+2y2
=4x2+6xy+2y2.