In(x-5)+In(x+3)-2In2=In(2x-9)
问题描述:
In(x-5)+In(x+3)-2In2=In(2x-9)
答
In(x-5)+In(x+3)-2In2=In((x-5)*(x-3)/4)=In(2x-9)
(x-5)*(x+3)/4=2x-9
所以
x=3或7