log3(x-1)=log9(x+5)
(x-1)^2=x+5
x^2-2x+1=x+5
x^2-3x-4=0
(x+1)(x-4)=0
x1= -1(舍去) ,x2=4
所以,方程的解為x=4不好意思，麻煩你了，^代表什么，我看不懂代表"平方"
log3(x-1)=log9(x+5)
(x-1)的平方=x+5
x的平方-2x+1=x+5
x的平方-3x-4=0
(x+1)(x-4)=0
x1= -1(舍去) ,x2=4
所以,方程的解為x=4
log3(x-1)=log9(x+5)詳細(xì)過程,
log3(x-1)=log9(x+5)詳細(xì)過程,
數(shù)學(xué)人氣：181 ℃時間：2020-03-20 14:02:06
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