Question

Square root of (√48-√45)

Answer 1

$= \sqrt{48} - \sqrt{45} \\ = \sqrt{2 \times 2 \times 2 \times 2 \times 3} - \sqrt{3 \times 3 \times 5} \\ = 2 \times 2 \sqrt{3} - 3 \sqrt{5} \\ = 4 \sqrt{3} - 3 \sqrt{5}$