Math, asked by jrevathi385, 11 hours ago

What are the roots of x + 1/x = 2 (a) 14:11 (b) 1:1 (c) 11:4 (d) 5:7​

Answers

Answered by MaheswariS
1

\underline{\textbf{Given:}}

\mathsf{x+\dfrac{1}{x}=2}

\underline{\textbf{To find:}}

\textsf{The roots of}\;\mathsf{x+\dfrac{1}{x}=2}

\underline{\textbf{Solution:}}

\mathsf{Consider,}

\mathsf{x+\dfrac{1}{x}=2}

\textsf{This can be written as}

\mathsf{\dfrac{x^2+1}{x}=2}

\mathsf{x^2+1=2x}

\mathsf{x^2+1-2x=0}

\mathsf{x^2+1^2-2(1)(x)=0}

\mathsf{Using,\;}\boxed{\mathsf{a^2+b^2-2\,ab=(a-b)^2}}

\implies\mathsf{(x-1)^2=0}

\implies\mathsf{x-1=0}

\implies\boxed{\mathsf{x=1\;(twice)}}

\underline{\textbf{Answer:}}

\mathsf{Roots\;are\;1,1}

Similar questions