Question

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Answer 1

Step-by-step explanation:

1/3√2

=1(3-√2) / (3+√2) (3-√2)

= 3-√2 / 9-2

= 3-√2 / 7

ii) 1/√7-√6

= 1(√7+√6) / (√7-√6) (√7+√6)

= √7+√√6 / 7-6

= √7+√6 / 1

iii) 1 / √7

= 1(-√7) / (√7) (-√7)

= -√7 / -7

= √7 / 7

iv)√6 / √3-√2

= √6 (√3+√2) / (√3+√2) (√3-√2)

= √18 + √12 / 3-2

= √18+√12 / 1