Câu hỏi 5Rút gọn $$\frac{(\sqrt5)^3-(\sqrt2)^3}{\sqrt5-\sqrt2}-\frac{(\sqrt5)^3+(\sqrt2)^3}{\sqrt5+\sqrt2}.$$$\sqrt{10}$$2\sqrt{10}$$3\sqrt{10}$$\sqrt5-\sqrt2$$\sqrt5+\sqrt2$