aliensbrain
  • Home
  • Study
  • Quizzes
  • 🎤AI Practicefree
  • Notebooks
  • Community
  • Sign in
Multiple choice

If (x + 1/x) = 3, then (x2 + 1/x2) is equal to

  1. 7

  2. 10/3

  3. 11

  4. 82/9

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(x + 1/x) = 3    (x + 1/x)2 = 9     Or  x2 + 1/x2 + 2 = 9          x2 + 1/x2 = 7

Keep practicing — related questions

  • Tony has a box of apples. How many apples are in the box, 1. if he gave the apples to 7 friends equally? Th...
  • switch(x) { default: System.out.println(Hello); } Which two are acceptable types for x? 1. byte 2. long 3. ...
  • What two statements are true about the result obtained from calling Math.random()? 1. The result is less th...
  • Which three are valid method signatures in an interface? 1. private int getArea(); 2. public float getVol(f...
  • Which of the following are legal lines of code? 1. int w = (int)888.8; 2. byte x = (byte)1000L; 3. long y =...
  • In which of the following types of crystal systems, all unit cell vector angles are equal? 1. Hexagonal 2. ...
  • If 1 + 1 = 0 2 + 2 = 2 3 + 3 = 24, then 4 + 4 = ?
  • Which two statements are equivalent? 1. 3/2 2. 3<2 3. 3*4 4. 3<<2
Advertisement
© Aliensbrain | all rights reserved
  • About
  • Contact
  • Terms and Condition
  • Privacy Policy