Question

Which expression is equal to 9 divided by 3 minus the square root of 2

Answer 1

`(9)/(3- √(2) )`

You can rationalise this by multiplying the numerator and denominator by the denominator (inverse the sign).


`(9)/(3- √(2) ) * (3+ √(2))/(3+ √(2)) = (27+9 √(2))/(7)`