Question

$\frac{1}{ \sqrt{8} - 3 \sqrt{2} } \: is \:equal \: to$

Answer 1

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Answer 2

Answer:

- √2/2

Step-by-step explanation:

To solve

1/(√8-3√2)......i

8 can be written as 2*2*2

√8 = √2*2*2 = 2√2

Put value of √8 on i

1/(2√2 - 3√2) =  - 1/√2

When the irrational number is in denominator, then rationalise the fraction

Multiply √2 in numerator and denominator

- 1/√2* (√2/√2)

= - √2/2

Hence the answer is - √2/2