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
VER TODAS LAS RESPUESTAS ( 63+ )
Otras preguntas
William feels one third of a water bottle in 16 of a minute. How much time will it take to fill the bottle?
What would be the interest?
A round ball of dough is rolled and flattened into a sheet to make pie crust. Based on the scenario, what physical property of the dough has changed? taste c
Me pueden dar argumentos con fundamento para rechazar a la diversidad sexual (NO soy homofobico ni un retrograda) Es para fines educativos.
Fred wilson is a contemporary artist who creates works by focusing on the common practice of _______ to communicate how this contributes to ideas about racism a
What is the product of the polynomials below? (5 - x2)(x - x3) A. x5 - 5x3 + 5x B. x5 - 4x3 + 5x C. x5 + 6x3 + 5x D. x5 - 6x3 + 5x
How to answer the question
Tess took out a payday loan with an effective interest rate of 34,700%. If she had $240 to invest for a year at this interest rate, how much would she make in i
Why were Archaea and Bacteria grouped together by biologists until recently?
Why did enslaved people need an extended family as a measure of security
