Question

If a = 3 + 2√2, find the value of a - 1/a​

Answer 1

a = 3 + 1.41

a = 4.141

so, a-1/a = 4.141 - $\frac{1}{4.141}$

LCM = 4.141

so $\frac{4.141}{1}$ * $\frac{4.141}{4.141}$ = $\frac{17.147}{4.141}$

so a-1/a = $\frac{17.147}{4.141}$ - $\frac{1}{4.141}$

Answer = $\frac{16.147}{4.141}$

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Answer 2

Answer:

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