Question

If a=2+√3 then find a-1/a

Answer 1

Question:-

If a=2+√3 then find a-1/a

Put a value in the equation--

$\frac{a-1}{a}$

=>$\frac{2+√3-1}{2+√3}$

=$\frac{1+√3}{2+√3}$ RATIONALIZE THE DENOMINATOR↓

×BY 2-√3

=>$\frac{2-√3+3√2+3}{(2)^²-(√3)^2}$

=>$\frac{5+3√2}{4-3}$

=>$\frac{5+√3}{1}$ = $\frac{a-1}{a}$

$\mathcal{BE \: BRAINLY}$

Answer 2

Step-by-step explanation:

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