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

Out of 18 times at bat, Jen got a hit 5/6 of the time and Kasa got a hit 8/9 of the time. 1) Who got more hits? 2) How many more?

Sean answered 18 of 20 quiz questions correctly. What percent of the quiz questions did Sean answer correctly?

The graph of a proportional relationship passes through (12, 16) and (1, y) . Find y

According to the figure above, what type of plate boundary occurs between the Nazca Plate and the South American Plate? a. convergent oceanic-continental plate

In a very small population of birds, assume there are two types of alleles that control feather color. 5 out of 20 total alleles in the population code for blue

Here is anther 10+n/6=6

Gabriella has 4 times as many erasers as Leona. Leona has 8 erasers. Does Gabriella have? How did you find it out

What to say if someone accepts your apology?

The phs regulations about financial conflict of interests require which party to disclose significant financial conflicts of interest?

The club head (m=0.170 kg) of a golf club collides with a golf ball (m=0.046 kg) at rest upon a tee. a. which object experiences the greatest force? club head