Rationalising means you remove the denominator by multiplying the entire fraction by it, i.e. multiply top and bottom by root 3.
I know that I've even done the other questions correctly it just this one where i'm doing something wrong and that means i cannot get the right answer.
When I've done what you said I've now got 12-5+3/3 this is where i don't know what to do. :/
I know that I've even done the other questions correctly it just this one where i'm doing something wrong and that means i cannot get the right answer.
When I've done what you said I've now got 12-5+3/3 this is where i don't know what to do. :/
When you multiply the numerator by 3 what do you get