(2x+y)²-(x+2y)²分解因式
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(2x+y)²-(x+2y)²分解因式
(2x+y)²-(x+2y)²分解因式
(2x+y)²-(x+2y)²分解因式
(2x+y+x+2y)(2x+y-x-2y)
=(3x+3y)(x-y)