(19x-x^2)/(x+1)*(x+(19-x)/(x+1)=84_数学解答

(19x-x^2)/(x+1)*(x+(19-x)/(x+1)=84

人气：202 ℃　时间：2020-03-26 02:18:03

解答

解X么(19x-x²)/(x+1)*19/(x+1)=84（361X-X²）/（X+1）²-84（X+1）²/（X+1）²=0（361X-X²-84X²-168X-84）/（X+1）²=0（84X²-93X+84）/（X+1）²=0无实数解...