(y²+3y)²-(2y+6)²

来源：学生作业帮助网编辑：六六作业网时间：2024/12/28 20:27:56

(y²+3y)²-(2y+6)²(y²+3y)²-(2y+6)²(y²+3y)²-(2y+6)²(y²

(y²+3y)²-(2y+6)²
(y²+3y)²-(2y+6)²

(y²+3y)²-(2y+6)²
(y²+3y)²-(2y+6)²
=y^4+6y³+9y²-4y²-24y-36
=y^4+6y³+5y²-24y-36

(y²+3y)²-(2y+6)²
=[(y²+3y)+(2y+6)][(y²+3y)-(2y+6)]
=(y²+5y+6)(y²+y-6)
=(y+2)(y+3)(y-2)(y+3)
=(y+2)(y-2)(y+3)²
如果不懂，请追问，祝学习愉快！