Question

rationalise the denominator​

Answer 1

17 - 6√2

Step-by-step explanation:

(6-4√2)(6-4√2)

____________

(6+4√2)(6-4√2)

= 6² + (4√2)² - 24√2

_________________

6² - (4√2)²

36 + 32 - 24√2

___________

36 - 32

68 - 24√2

_________

4

= 17 - 6√2