What is the Equal of Equation

If a + b =12, ab =22, then (a square + b square) is equal to

  1. 188
  2. 144
  3. 34
  4. 100
Manish Listener Asked on 15th June 2015 in Maths.
Add Comment
  • 1 Answer(s)

    Answer: (4) 100
    Explanation:-
    Given- 
    a + b = 12   and ab = 22
    Then,
    (a + b)2 = a2 + b2 + 2abPut the value of   a + b = 12      and ab = 22     in these equation,
    122 = a2 + b2 + 2 x 22
    144 = a2 + b2 + 44
    a2 + b2 = 144 – 44 = 100
    Hence, the answer is (4) 100.

    Anurag Mishra Professor Answered on 17th June 2015.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.