Question

若分式方程4x/x-2-5=m/2-x无解,那么m的值应为

Answer 1

4x/(x-2)-5=m/(2-x)

4x/(x-2)-m/(2-x)=5

(4x+m)/(x-2)=5

4x+m=5x-10

x=m+10

当x=2时方程无解,则有:m+10=2

即m=8.