x²+2+4- x(x²+2x)/ x-2要简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 19:20:11
![x²+2+4- x(x²+2x)/ x-2要简便计算](/uploads/image/z/1752143-23-3.jpg?t=x%26%23178%3B%2B2%2B4-+x%EF%BC%88x%26%23178%3B%2B2x%EF%BC%89%2F+x-2%E8%A6%81%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
x)PS6466Ux. t+TX|]Ó}_[|t"}bա/!җf<ٌ/|cճM_Nil$A-s6ZHSnnMpf>T11
2jǡU$
` 4z
x²+2+4- x(x²+2x)/ x-2要简便计算
x²+2+4- x(x²+2x)/ x-2
要简便计算
x²+2+4- x(x²+2x)/ x-2要简便计算
题目是这个没错?x²+2+4-x(x²+2x)/ x-2
原式=[(x-2)(x²+2x+4)-x(x²+2x)]/(x-2)
=[(x³-8)-(x³+2x²)]/(x-2)
=(-2x²-8)/(x-2)