Question

To rationalize the denominator of


`5 - √(7) / 9 - √(14)`
, you should multiply the expression by which fraction?
Answer choices:

`5 + √(7) / 9 - √(14)`

`9 - √(14) / 9 - √(14)`

`9 + √(14) / 9 + √(14)`

`√(14) / √(14)`
​

Answer 1

option 3

Explanation:

`(5- √(7) )/(9-√(14) ) = (5- √(7) )/(9-√(14) ) * (9 + √(14) )/(9 +√(14) )`

To rationalize the denominator choose the denominator and change the sign of the operation.