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 ( 44+ )
Otras preguntas
Which country occupied Vietnam during World War II? a. the United States b. Japan c. China d. France
The Ming Dynasty was followed by the _____ Dynasty.
Formula A: CH3 Formula B: C2H6 Given the two formulas representing the same compound: Which statement describes these formulas? (1) Formulas A and B are both em
Your house is the place where you live with your family. What can you do to make your house a happy and comfortable place to live in?
A town has a clock tower with a bell that tolls the number of hours of the day. (The bell will toll six times at 6 a. m. and six times at 6 p.m.) How many times
Two functions, y = |x - 3| and 3x + 3y = 27, are graphed on the same set of axes. Which statement is true about the solution to the system of equations? (1) (3,
What number is 1/10 the value of 237?
Why is Harriet Tubman considered a hero?
What was the conflict with Paul revere ride?
What is the quark composition of a proton? (1) uud (3) csb (2) udd (4) uds
