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 ( 48+ )
Otras preguntas
Plz help! Find the values of x at which the function f(x) = x³ - 3x + 1 has a relative maximum and a relative minimum, and then find the relative maximum value
Can you help me with this question?
is recommended to get at least __________ hours of sleep in order to help reduce stress levels. A. 6 B. 7 C. 8 D. 9
write f(x) in a non-factored way from polynomial equation f(x)=(x+2)(-x+3)(x-2)?
Which of the following accurately describes modernism?
Solve 5x + 7 > 17. {x | x < 2} {x | x > 2} {x | x < - 2} {x | x > - 2}
What is another way to write the absolute value inequality absolute value of p less than or equal to 12?
Which phrase defines a community? a. environment where nonliving things exist b group of the same species that live together cgroup of several populations liv
What does diction refer to? the Civil War historical text word choice public speaking
PLZ HELP ASAP+ BRANLIEST+25 POINTS!!!!!!!! Mixed numbers with unlike denominators _____ be subtracted from each other once you find the least common denominator
