当分式x(x-2)/x²+2的值为0 时,求x²/(x-5)-(x)/(x-2)+(1+x)/(2-x)的值
1.当分式x(x-2)/x²+2的值为0时,求x²/(x-5)-(x)/(x-2)+(1+x)/(2-x)的值2.先化简再求值:a/(a-3)-(a+...
1.当分式x(x-2)/x²+2的值为0 时,求x²/(x-5)-(x)/(x-2)+(1+x)/(2-x)的值
2.先化简再求值:a/(a-3)-(a+6)/(a^2-3a)+3/a,其中a=3/2
各位拜托了,速度啊~ 展开
2.先化简再求值:a/(a-3)-(a+6)/(a^2-3a)+3/a,其中a=3/2
各位拜托了,速度啊~ 展开
展开全部
1. 当分式x(x-2)/x2+2的值为0 时,x=0或x=2
(1)若x=0,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)=0
(2)若x=2,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)无解(因为分母2-x=0)
2. a/(a-3)-(a+6)/(a^2-3a)+3/a
=a/(a-3)-(a+6)/a(a-3)+3/a
=a2/a(a-3)-(a+6)/a(a-3)+3(a-3)/a(a-3)
=(a2+2a-15)/a(a-3)
=(a-3)(a+5)/a(a-3)
=(a+5)/a
=13/3
以上解答相当满意!哈哈
(1)若x=0,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)=0
(2)若x=2,则 x2/(x-5)-(x)/(x-2)+(1+x)/(2-x)无解(因为分母2-x=0)
2. a/(a-3)-(a+6)/(a^2-3a)+3/a
=a/(a-3)-(a+6)/a(a-3)+3/a
=a2/a(a-3)-(a+6)/a(a-3)+3(a-3)/a(a-3)
=(a2+2a-15)/a(a-3)
=(a-3)(a+5)/a(a-3)
=(a+5)/a
=13/3
以上解答相当满意!哈哈
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询