Solve If x+1x = 3, then what is the value of the expression x2+1x2 A) 1B) - Maths - Rational Numbers

Question

Solve

I f   x + 1 x   =   3 ,   t h e n   w h a
t   i s   t h e   v a l u e   o f   t h e
  e x p r e s s i o n   x 2 + 1 x 2   ? A )  
  1 B )     3 C )     5 D )    
7

Neha Sethi · Accepted Answer

Dear student
If x+1x=3Squaring both sides, we get⇒ x+1x2=3⇒x2+1x2+2  =3  using a+b2=a2+b2+2ab⇒x2+1x2=1
Regards

Solve I f x + 1 x = 3 , t h e n w h a t i s t h e v a l u e o f t h e e x p r e s s i o n x 2 + 1 x 2 ? A ) 1 B ) 3 C ) 5 D ) 7

Solve

$I f x + \frac{1}{x} = \sqrt{3}, t h e n w h a t i s t h e v a l u e o f t h e e x p r e s s i o n x^{2} + \frac{1}{x^{2}} ? A) 1 B) 3 C) 5 D) 7$