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 ( 88+ )
Otras preguntas
Find the mean, variance, and standard deviation for the data set. 19,11,21,9,15
A bag contains the following marbles: 12 black marbles, 8 blue marbles, 16 brown marbles and 14 green marbles. what is the ratio of black marbles to blue marble
The profit P(x) obtained by manufacturing and selling x units of a certain product is given by P(x) = 60x - x2. Determine the number of units that must be produ
What is a Unit Circle?
it's a graph, I need help with the first one to understand how to do the rest. Please draw it clearly and understandably.
A binomial experiment consists of 18 trials. The probability of success on trial 11 is 0.79. What is theprobability of success on trial 15?0.790.280.610.460.560
34. A school admissions office accepts 2 out of every 7 applicants. Given that the school accepted 630 students, how many applicants were NOT accepted? F. 140 1
D. The number of people in the United States with mobile cellular phones was about 142million in 2002 and about 255 million in 2007. If the growth in mobile cel
Answer this question
complet the table of inputes and outputs for given function. g(x) = -4x-1 x g(x) 70 -13-1
