Question

03. If a = 5 +√7 then find the value of a - 1/a
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Answer 1

Answer:

7√5

Step-by-step explanation:

Givan that:

a=7+√5

so,

1 1

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

a 7+√5

Now,

We both values

1 /a - --------- = 7+√5 - 7+√5

a  = 7√5

So,

Answer is 7√5.

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