Question

5 +2 √3 7+4 √3 = a − 6 √3

Answer 1

Answer:

$12 + 6 \sqrt{3} = a - 6 \sqrt{3} \\ 12 = 12 \sqrt{3} + a \\ 12 - 12 \sqrt{3} = a \\ = 12(1 - \sqrt{3} )$