Question

分解因式：(2x+y)2次方-(x+2y)2次方

Answer 1

原式=（2x+y+x+2y）(2x+y-x-2y)=(3x+3y)(x-y)=3(x+y)(x-y)

Answer 2

(2x+y)�0�5-(x+2y)�0�5=[(2x+y)+(x+2y)][(2x+y)-(x+2y)]=(3x+3y)(x-y)=3(x+y)(x-y)

Answer 3

3X�0�5＋9XY

Answer 4

你是初二的么？