ROOT 72-3 /ROOT 3+. LEAVING YOUR ANSWER IN THE FORM OF A+B ROOT C ,WHERE A, B, C ARE RATIONAL NUMBERS.

Answer 1

Please type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.

Answer 2

(√72 - 3)/(√3 + ? )

I think you are missing something here.
BTW, you keyboard is stuck on CAPS