Rút gọn: `e) (2sqrt{3} + sqrt{5}).sqrt{3} - sqrt{60}` `g) (sqrt{28} - sqrt{12} - sqrt{7}).sqrt{7} + 2sqrt{21}` `m) (5sqrt{2} + 2sqrt{5}).sqrt{5} - sqrt{250}`

2024-10-31 10:59:08

Rút gọn: `e) (2\sqrt{3} + \sqrt{5}).\sqrt{3} - \sqrt{60}` `g) (\sqrt{28} - \sqrt{12} - \sqrt{7}).\sqrt{7} + 2\sqrt{21}` `m) (5\sqrt{2} + 2\sqrt{5}).\sqrt{5} - \sqrt{250}`

Đăng phản hồi