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If x + 1/x = 2, then the value of x^2 + ...

If `x + 1/x = 2`, then the value of `x^2 + 1/(x^2)` is :

A

6

B

4

C

2

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
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ARIHANT SSC-FUNDAMENTALS -EXERCISE - MISCELLANEOUS
  1. If the sum of two numbers added to the sum of their squares is 42 and ...

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  2. If the equality 1/(x -1) = 2/(x - 2) is satisfied by x then the value ...

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  3. If x + 1/x = 2, then the value of x^2 + 1/(x^2) is :

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  4. If a = 24, b = 26, c = 28, then the value of a^2 + b^2 + c^2 - ab - bc...

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  5. A number n is said to be 'perfect' if the sum of all its divisors excl...

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  6. The product a/(b^2) xx b/(a^2) expressed as the sum of two identical t...

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  7. If x = 6 and y = 3 then the value of [x + y]^(x//y) is:

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  8. If the arithmetic mean of the numbers x1 , x2, x3,……., xn is barx, the...

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  9. The arithmetic mean of first 50 odd natural numbers is :

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  10. A boy draws n squares with sides 1,2,3,4,5,…. In inches. The average a...

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  11. Which one of the following sets of surds is in correct sequence of asc...

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  12. Which one of the following statements is not correct :

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  13. If (a^2 + b^2)^3 = (a^3 + b^3)^2 and ab != 0 then (a/b + b/a)^6 is equ...

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  14. A page contains 60 lines. A chapter contains 125 pages. A book contain...

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  15. If x is a natural number which is a perfect square , then the number x...

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  16. If 2^p + 1 is a prime number, then p must be power of:

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  17. The number of composite numbers between 101 and 120 is :

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  18. The number 10^(N) - 1 is divisible by 11 for :

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  19. A merchant has 140 litres, 260 litres, 320 litres of three kinds of oi...

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  20. If d is the HCF of a and b, then d = lambda a + mu b where :

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