ArithmeticIf  a−b=3  and  a2+b2=29 , find the value of ab. 

If  ab=3  and  a2+b2=29 , find the value of ab.

 

  1. A

    10

  2. B

    12

  3. C

    15

  4. D

    18

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    Solution:

    2ab=(a2+b2)(ab)2 =299=20 ab=10.

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