Question

[(4-2m)/(m+5)]平方+[(m-3)/(m+5)]平方=1 化简整理为m(m-8)=0 ,m=0或m=8.

Answer 1

[(4-2m)/(m+5)]平方+[(m-3)/(m+5)]平方=1

等式两边同乘以（m+5）^

(4-2m)^+(m-3)^=(m+5)^

16-16m+4m^+m^-6m+9=m^+10m+25

4m^-32m=0

m(m-8)=0

m=0或m=8