(y²+3y)²-(2y+6)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 13:03:59
![(y²+3y)²-(2y+6)²](/uploads/image/z/7631620-52-0.jpg?t=%28y%26%23178%3B%2B3y%29%26%23178%3B-%282y%2B6%29%26%23178%3B)
(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
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