数学题化简再求值化简再求值那是x² ,不要看错了
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/11 11:37:07
![数学题化简再求值化简再求值那是x² ,不要看错了](/uploads/image/z/956904-24-4.jpg?t=%E6%95%B0%E5%AD%A6%E9%A2%98%E5%8C%96%E7%AE%80%E5%86%8D%E6%B1%82%E5%80%BC%E5%8C%96%E7%AE%80%E5%86%8D%E6%B1%82%E5%80%BC%E9%82%A3%E6%98%AFx%26%23178%3B++%2C%E4%B8%8D%E8%A6%81%E7%9C%8B%E9%94%99%E4%BA%86)
xN0_%bu4v1l1 ɎmmЌ0U.@Pxx9IJ˅9;ύJ0Mz<v}`ҴF8cd}svVj)iy=7{
SSLJS%/h8qMiI]5a z6 W)B
B9`B31M!)SȐcA - gʊ"/ҋ#0Mr$ԆLR.ץùoA})?T9
ө b$*'#okِܷ,';sJtϥOՀ\7B>|<ُbWٸ.MHv&մjPv#څ.F6FH0icqL"Cb[v6kh02,%0RNBLpkvG/-hg`aƱA1e K( ڔw
GǍ/}B^
WfՍ?ڌB})5sIDpP
k_gp8泝>HZā.ך4h|
j@Pd_1p.7
数学题化简再求值化简再求值那是x² ,不要看错了
数学题化简再求值
化简再求值
那是x² ,不要看错了
数学题化简再求值化简再求值那是x² ,不要看错了
原式=[1/(x+1)+(x-1)^2/(x+1)(x-1)]×[(x+1)/(x-1)]
=[1/(x+1)+(x-1)/(x+1)]×[(x+1)/(x-1)]
=x/(x+1)×[(x+1)/(x-1)]
=x/(x-1)
[1/(x+1)+(x²-2x+1)/(x²-1)】÷(x-1)/(x+1)
=(x-1+x²-2x+1)/[(x-1)(x+1)]*(x+1)/(x-1)
=x(x-1)/[(x-1)(x+1)]*(x+1)/(x-1)
=x/(x-1)
由于没有给出X的具体值,故无法求代数式值 希望可以帮到你。
解:原式=[1/(x 1) (x-1)/(x 1)] (x-1)/(x 1)
=(1 x-1 x-1)/(x 1)
=(2x-1)/(x 1)