Question

If x+1/x=7,findx-1/2

Answer 1

$\sf{\implies x+\dfrac{1}{x}=7}$

$\sf{\implies \dfrac{x^{2}+x}{x}=7}$

$\sf{\implies x^{2}+x=7x}$

$\sf{\implies x^{2}+x-7x=0}$

x =-b±√b²-4ac/2a

=>x =-1±√-27/2