Arzeebo Arzeebo

01-02-2016
Mathematics

contestada

x+ 1/x =5 what is the value x²+1/x²?

Respuesta :

Billymkhoi Billymkhoi

01-02-2016

x+ 1/x= 5
⇒ (x+ 1/x)^2= 5^2
⇒ (x+ 1/x)^2= 25
⇒ x^2+ 2(x)(1/x)+ 1/x^2= 25
⇒ (x^2+ 1/x^2)+ 2*1= 25
⇒ x^2+ 1/x^2= 25 -2
⇒ x^2+ 1/x^2= 23

The final answer is 23~

Answer Link

Otras preguntas

the government of india has,since independence ,taken several steps to put an end to casteism in india. do you think that discrimination on the basis of caste n

Round this number to the nears thousand 3,842,532

What is your opinion of the idea that our environment shapes our perceptions?

what is the nth term to: 0,6,14,24,36,50

in his book the prince niccolo machiavelli advises that a wise ruler is one who

Music written for ballet, wich consiste of dances,is called a...

A group of organs that work together to perform a closely related function is called a(n) a. organ system. b. organism. c. tissue. d. cell

Which best describes Jim and Della in "The Gift of the Magi"? a. They are just getting to know each other. b. They are always competing with one another. c. Th

When all parts of a circuit are composed of conducting materials, the circuit is said to be A. closed. B. shorted. C. parallel. D. open.

which religion believes in mecca