“先化简,再求值:(x+3分之x-3+x²-9分之6x)÷x²-9分之1,其中x=根号2009”小梁同学做题时把“x=-根号2009”错抄成了“x=根号2009”,但他的计算结果也是正确的,请你解释这是怎么回事?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/10 05:03:47
![“先化简,再求值:(x+3分之x-3+x²-9分之6x)÷x²-9分之1,其中x=根号2009”小梁同学做题时把“x=-根号2009”错抄成了“x=根号2009”,但他的计算结果也是正确的,请你解释这是怎么回事?](/uploads/image/z/1107685-37-5.jpg?t=%E2%80%9C%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%3A%28x%2B3%E5%88%86%E4%B9%8Bx-3%2Bx%26sup2%3B-9%E5%88%86%E4%B9%8B6x%29%C3%B7x%26sup2%3B-9%E5%88%86%E4%B9%8B1%2C%E5%85%B6%E4%B8%ADx%3D%E6%A0%B9%E5%8F%B72009%E2%80%9D%E5%B0%8F%E6%A2%81%E5%90%8C%E5%AD%A6%E5%81%9A%E9%A2%98%E6%97%B6%E6%8A%8A%E2%80%9Cx%3D-%E6%A0%B9%E5%8F%B72009%E2%80%9D%E9%94%99%E6%8A%84%E6%88%90%E4%BA%86%E2%80%9Cx%3D%E6%A0%B9%E5%8F%B72009%E2%80%9D%2C%E4%BD%86%E4%BB%96%E7%9A%84%E8%AE%A1%E7%AE%97%E7%BB%93%E6%9E%9C%E4%B9%9F%E6%98%AF%E6%AD%A3%E7%A1%AE%E7%9A%84%2C%E8%AF%B7%E4%BD%A0%E8%A7%A3%E9%87%8A%E8%BF%99%E6%98%AF%E6%80%8E%E4%B9%88%E5%9B%9E%E4%BA%8B%3F)
xSn@
PbPJ~4M\W'iMy zlp?vS^ U_*Ş9;;sL4Ni:K
{I4S;-Tqf3(]Q}6~旹+
7;D2
tZwv[*C/E+E:cׂy|VUPCbfFT"V3ڣ=)1кaHr.8yZg1YzrF7q0>)}ؒd
1Bfm+Rн0{kOU%> -ʞIkS@n$yMe%HJ/d-L(*POK8-ёz$QLO:Bhj+ta:ڨb^|-aSDɗcKE=kݱPa"b
c(h