5x5x5x5+3可以写成( )x( )一( )

\u8bf7\u95ee\u662f\u5199\u6210\uff08X-4\uff09\u00b7\uff08X-3\uff09 \u8fd8\u662f\u5199\u6210\uff08X-4\uff09\uff08X-3\uff09\uff1f

\u90fd\u53ef\u4ee5

\u6211\u4e0d\u5bb9\u6613\u5440\u3001\u3001\u3001\u7528\u4e8620\u5206\u949f\u2026\u2026

\u89e3\uff1a\u4f9d\u636e\u201c1/a+1/b+1/c=(bc+ac+ab)/abc\u201d,

\u6240\u4ee5\uff0cx^2+x-3\u76f8\u5f53\u4e8e(x-2)(x-3)a+(x-1)(x-3)b+(x-1)(x-2)c

\u5219\uff0c\uff08x^2-5x+6\uff09a+(x^2-4x+3)b+(x^2-3x+2)c=x^2+x-3

\u6700\u540e\u5b9e\u9a8c\uff0c\u5f97\uff1aa=-1/2\uff0c b=-3 \uff0cc=9/2 \u3002

\u6240\u4ee5\uff0c(x^2+x-3)/((x-1)(x-2)(x-3))

=\uff08-1/2\uff09/\uff08x-1\uff09+\uff08-3\uff09/\uff08x-2\uff09+(9/2)/(x-3)

5×5－2
把最后的3加上2变成第五个5，乘完后减去之前加的那个2

扩展阅读：x日x夜成语 ... xnx男装 ... 浏览器搜x5xtop ... x5xtop下载 ... 永久免费access进销存软件 ... 5十5十5十5写成乘法 ... 5xsq新版本 ... 5水蜜桃禁忌 ... 5乘3可以写成5x3或3x5 ...