Question

\(\frac{x+1}{2015}=\frac{2015}{x+1}\)

Answer 1

<=>(x+1)^2=2015^2

<=>x+1=2015

=>x=2015-1

=>x=2014

Answer 2

\(\frac{x+1}{2015}=\frac{2015}{x+1}\)

\(\Rightarrow\left(x+1\right).\left(x+1\right)=2015.2015\)

\(\Rightarrow\left(x+1\right)^2=2015^2\)

\(\Rightarrow x+1=\pm2015\)

\(\Rightarrow\orbr{\begin{cases}x+1=2015\\x+1=-2015\end{cases}\Rightarrow\orbr{\begin{cases}x=2014\\x=-2016\end{cases}}}\)

Vậy x = 2014 hoặc x = - 2016

Answer 3

=>(x+1).(x+1)=2015.2015

=>(x+1)^2=2015^2

=>x+1=2015

=>x=2015-1

=>x=2014

Answer 4

(x+1)²=2015²

^{x+1=2015 hoặc x+1=-2015}

^{x=2014 hoac x=-2016}

Answer 5

\(\frac{x+1}{2015}=\frac{2015}{x+1}\)

\(\Leftrightarrow\left(x+1\right)\left(x+1\right)=2015.2015\)

\(\Leftrightarrow\left(x+1\right)^2=2015^2\)

\(\Leftrightarrow x+1=2015\)

\(\Rightarrow x=2015-1=2014\)

Answer 6

Mik làm thiếu r