已知x=9/2 求:[(x^+7x+10)/(x^2+6x+5)]×[(x^3+1)/(x^2已知x=9/2 求:[(x^+7x+_数学解答

已知x=9/2 求:[(x^+7x+10)/(x^2+6x+5)]×[(x^3+1)/(x^2
已知x=9/2 求:[(x^+7x+10)/(x^2+6x+5)]×[(x^3+1)/(x^2+4x+4)]/[(x^2-x+1)/(x-2)]

人气：347 ℃　时间：2020-02-06 08:59:14

解答

把x2+7x+10化成(x+2）（x+5）同理就可以约分了最后约分成最简,把想=9/2代入,就可以啦