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 ( 32+ )
Otras preguntas
Multiply and reduce to lowest terms. 5 2/5 × 3 6/11= 19 8/55 19 4/25 19 3/8 19 1/7
Discuss the advantages of computerised systems over manual systems
help me find the answer please?
A social worker earns an average bi-weekly net pay of $1,465.87. Which compound inequality correctly shows the amount of money, m, the social worker can spend i
A cedar raft is 2.4 m wide, 0.30 m high, and 3.0 m long. what is the maximum load (in newtons) the raft can support? assume the density of cedar to be 598 kg/m^
which author had the most titles on a single new york times best-seller list in 2022?
90- We always get up early. (are used to)
3) A large cheese pizza costs $11.99. A medium cheese pizza costs $8.99. How much do 2 large and 3 medium pizzas cost?
What year was Christopher Columbus born in?
Dilate quadrilateral ABCD using P as the center and the following scale factors: IN RED: Scale factor of 1/2. Label the image A'B'C'D'. IN BLUE: Scale factor of
