Question

pleaze solve this question?????

Answer 1

28+16√3=(a+b√3)²    [squaring on both sides]
4² + (2√3)² +2×4×2√3=(a+b√3)²
(4+2√3)²=(a+b√3)²
4+2√3=a+b√3

comparing a and b
a=4  b=2