Question

if a =6+2root 3, find the value of a-1/a

please give step by step explain ​

Answer 1

Answer:

a=6+2√3

a- 1/a

6+2√3 -1/6+2√3

(6+2√3)(6+2√3)-1/6+2√3

(6+2√3)²-1/6+2√3

36+12+24√3-1/6+2√3

47+24√3/6+2√3

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