Câu 4: Trang 18 sách VNEN 9 tập 1Tính:a)$\frac{\sqrt{10,8}}{\sqrt{0,3}}$ ; ...

{
"answer1": "a) $\frac{\sqrt{10,8}}{\sqrt{0,3}} = \sqrt{\frac{10,8}{0,3}} = \sqrt{36} = 6$.",
"answer2": "b) $\frac{\sqrt{7}}{\sqrt{175}} = \sqrt{\frac{7}{175}} = \sqrt{0,04} = 0,2$.",
"answer3": "c) $\frac{\sqrt{2,84}}{\sqrt{0,71}} = \sqrt{\frac{2,84}{0,71}} = \sqrt{4} = 2$.",
"answer4": "d) $\frac{\sqrt{6,25}}{\sqrt{1,44}} = \sqrt{\frac{6,25}{1,44}} = \sqrt{4,34} \\approx 2,08$."
}