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

please solve this equation

True or False: Respiratory failure or shock is the most common cause of cardiac arrest in children and infants.

Euro 2000 was hosted in the Netherlands as well aswhich other country?ScotlandGermanyBersiumD

Help ASAP 10 points plz

BRAINLEST ANSWER!!! Muslims believe in one God, Allah. True False

Which Of the following represnt the range of the function y=-1/2(x+10)^2+14? 1) y>=-5 2)y>=10 3) y<=7 4) y<=14, Explain pls

Kay's mother taught her how to make handmade ornaments to sell at a craft fair. Kay rented a table at the fair for $30 and set up her work station. Each ornamen

Type the correct answer in the box. Round your answer to the thousandth place. The board of directors of a company knows that the probability that carbon emiss

what is the name of the longest subway track (THE NAME PLEASE NOT WHERE IT IS LOCATED)

Help solving this math problem