来自耿红琴的问题
【因式分解及分式计算1.因式分解1.x^5+x-12.(a+b)(a+b-ab)+(ab-1)(ab+1)2.已只:n为正整数,且n^$-16n^2+100为质数,求n.3.设a=x/(y+z),b=y/(x+z),c=z/(x+y),且x+y+z≠0求a/(a+1)+b/(b+1)+c/(c+1)】
因式分解及分式计算
1.因式分解1.x^5+x-1
2.(a+b)(a+b-ab)+(ab-1)(ab+1)
2.已只:n为正整数,且n^$-16n^2+100为质数,求n.
3.设a=x/(y+z),b=y/(x+z),c=z/(x+y),且x+y+z≠0
求a/(a+1)+b/(b+1)+c/(c+1)
