Question

Can someone please help ASAP will give brainliest

Answer 1

$3\sqrt{20} - 3\sqrt{45} + 5\sqrt{12} \\3\sqrt{5*2*2} -3\sqrt{5*3*3} +5\sqrt{2*2*3} \\3*2\sqrt{5} -3*3\sqrt{5} + 5*2\sqrt{3} \\6\sqrt{5 } - 9\sqrt{5} + 10\sqrt{3} \\-3\sqrt{5} +10\sqrt{3}$