Samyukta
Samyukta
24-10-2021
Mathematics
contestada
If X=3+√8, find X square + 1/x square
Respuesta :
VirαtKσhli
VirαtKσhli
24-10-2021
Given
:
-
x = 3 + √8
To
find
:
-
x² + 1/x²
Solu
t
ion
:
-
According
to
Question
,
x = 3 + √8
1/x = 1/3-√8
1/x = 1(3+√8)/(3+√8)(3-√8)
1/x = 3+√8/3²-(√8)²
1/x = 3+√8/9-8
1
/
x
=
3
+
√
8
So
that
,
x² + 1/x²
(x + 1/x)² - 2
( 3+√8+3-√8)²-2
9² - 2
81 - 2
7
9
Answer Link
VER TODAS LAS RESPUESTAS ( 71+ )
Otras preguntas
4. Of 100 students surveyed, 32 like green beans, 40 like carrots, 20 like both green beans and carrots, and 8 do not like green beans or carrots. Based on thes
5. The circumference of a circle is 157 centimeters. What is the area of the cirde in terms of ? A 7.57 cm? B 157 cm? С 56.257 cm D 2257 cm?
Which of the following best describes what capital contributes to production? A. Energy from the environment to fuel production. B. Resources created by humans
No single fossil proves that domesticated dogs and wolves evolved from a common ancestor. Yet almost all scientists agree that dogs and East Asian wolves share
The grocery store sells apples for 5lbs for 3$ how much would you pay for 15lbs of apples
two numbers are in the ratio 7:9 and the bigger number is 81 .what is the smaller number?
answer this pleaseeeee
i need help with these two questions
Pls help me on this. Tap on photo to see better
- 3. - 2. - 1,0, 1, If n represents the position of the number in the sequence, which expression can be used to determine the nth term? A.n +1 B.2n - 4 C.n-3 D.
