(x+y)的立方—9(x+y)的平方怎么算?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/27 05:33:58
![(x+y)的立方—9(x+y)的平方怎么算?](/uploads/image/z/2609381-29-1.jpg?t=%28x%2By%29%E7%9A%84%E7%AB%8B%E6%96%B9%E2%80%949%28x%2By%29%E7%9A%84%E5%B9%B3%E6%96%B9%E6%80%8E%E4%B9%88%E7%AE%97%3F)
x)ӨЮ|>gv>jb ys3PYCߓMI*'E~
y)[ZZ9`I[$SRF 1j
Vg"1n]T9Jcj ݆
(x+y)的立方—9(x+y)的平方怎么算?
(x+y)的立方—9(x+y)的平方怎么算?
(x+y)的立方—9(x+y)的平方怎么算?
(x+y)³-9(x+y)²
=(x+y)²(x+y-9)
(x+y)^3-9(x+y)=(x+y)(x+y+3)(x+y-3)
(x+y)³-9(x+y)²
=(x+y)²(x+y-9)
(x+y)^3-9(x+y)^2=(x+y)^2(x+y-9)