Math, asked by Harishkrishna8092, 8 months ago

7+3root2 denominator 7-3root2

Answers

Answered by Swetha03K
0

Answer:

  67 + 42√2

 ----------------

        31

Step-by-step explanation:

7 + 3√2               7 + 3√2           7 + 3√2

-------------       =   ----------------  ×  ----------------

7  -  3√2              7  -  3√2         7 + 3√2

   7(7 + 3√2) + 3√2 (7 + 3√2)

= ----------------------------------------

                49 - 9 × 2

   49 + 21√2 + 21√2 + 9 × 2

= -------------------------------------

                 49 - 18

   67 + 42√2

= ----------------

          31

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