Math, asked by veddiyora, 10 months ago

If a =2+√3 then find the Value of a- 1/a​

Answers

Answered by adityamahale2003
1

Answer:

2√3

Step-by-step explanation:

a = 2+ √3

Then,

1/a = 1/(2+√3)

    =  1× (2-√3)/(2+√3)(2-√3)      [Rationalize ; multiply numerator and                                                                                                    

    = (2-√3)/ (2)²-(√3)²                                denominator by (2-√3)]

    = (2-√3)/(4-3)

    =(2-√3)/1

    = 2-√3

Then,

a - 1/a = 2+√3-(2-√3)

          =2+√3-2 +√3

          =2√3

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