化简求值：[(x^2-x)/(x^2-2x+1)]-[x/(x+1)] 其中x=根号2

三金儿 1年前 已收到1个回答 举报
赞

粉点 幼苗

共回答了17个问题采纳率：88.2% 举报

/>[(x^2-x)/(x^2-2x+1)]-[x/(x+1)]
=[x(x-1)/(x-1)²]-[x/(x+1)]
=x/(x-1)-x/(x+1)
=x[1/(x-1)-1/(x+1)]
=x[(x+1-x+1)/(x-1)(x+1)]
=x[2/(x²-1)]
=2x/(x²-1)]
=2√2/(2-1)
=2√2

1年前

7
可能相似的问题

你能帮帮他们吗

精彩回答

Copyright © 2024 YULUCN.COM - 雨露学习互助 - 16 q. 0.275 s. - webmaster@yulucn.com