Question

If a = 2+3, find the value of a +1÷a​

Answer 1

Hello ,

Given that

a = 2 +  \sqrt{3}  

So, this means that

\frac{1}{a}  =  \frac{1}{2 +  \sqrt{3} }  \\  \\ on \: rationalizing \: we \:  \: get  \\  = 2 -  \sqrt{3}  

Now,

We know both the values

Putting to get the answer

a -  \frac{1}{a}  = 2 +  \sqrt{3}  - 2 +  \sqrt{3}  \\   \\  = 2 \sqrt{3}  

So,.

The answer will be 2root3

Hope this will be helping you ✌️

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Answer 2

Answer:

refer to the attachment

Step-by-step explanation:

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