Câu trả lời:
\(a\sqrt{75}+\sqrt{48}-\sqrt{300}\)
=\(5\sqrt{3}+4\sqrt{3}-10\sqrt{3}\)
=\(\left(4+5-10\right)\sqrt{3}\)
=-\(\sqrt{3}\)
b\(\sqrt{95}-\sqrt{72}+0,5\sqrt{8}\)
=\(\sqrt{95}-6\sqrt{2}+\sqrt{2}\)
=\(\sqrt{95}-\left(6+1\right)\sqrt{2}\)
=\(\sqrt{95}-7\sqrt{2}\)
c\(\sqrt{99}-\sqrt{11}+2\sqrt{44}\)
=\(3\sqrt{11}-\sqrt{11}+4\sqrt{11}\)
=\(\left(3-1+4\right)\sqrt{11}\)
=\(6\sqrt{11}\)