Tính
----- Nội dung dịch tự động từ ảnh -----
Bài 6: Tính:
A1, \(\left( 2 \frac{1}{2} + 3 \right) \cdot \left( -\frac{1}{\sqrt{9}} + \sqrt{\frac{2}{5}} \right) \).
A2, \(\frac{2}{3}\sqrt{81} \left( -\frac{3}{4} + \frac{9}{64} + \sqrt{\frac{2}{3}} \right)^{2}\).
A3, \(\left( \frac{\sqrt{1}}{9} \sqrt{\frac{25}{36}} \frac{49}{81} \frac{441}{324} \right)\).
B1, \(-\frac{1}{24} \left[ \frac{1}{\sqrt{3}^{2}} - \left(\frac{1}{2} - \frac{7}{2\sqrt{16}} \right) \right] \).
B2, \(1 - \frac{5}{\sqrt{196}} \left( \frac{5}{\sqrt{25}} - \sqrt{5} \right)^{2}\).
B3, \(\left( -\frac{5}{4} \right)^{2} - \sqrt{\frac{9}{4}} \left( -4.5 \right) - \frac{25}{16} \sqrt{\frac{64}{9}} \).
Bài 6: Tính:
A1, \(\left( 2 \frac{1}{2} + 3 \right) \cdot \left( -\frac{1}{\sqrt{9}} + \sqrt{\frac{2}{5}} \right) \).
A2, \(\frac{2}{3}\sqrt{81} \left( -\frac{3}{4} + \frac{9}{64} + \sqrt{\frac{2}{3}} \right)^{2}\).
A3, \(\left( \frac{\sqrt{1}}{9} \sqrt{\frac{25}{36}} \frac{49}{81} \frac{441}{324} \right)\).
B1, \(-\frac{1}{24} \left[ \frac{1}{\sqrt{3}^{2}} - \left(\frac{1}{2} - \frac{7}{2\sqrt{16}} \right) \right] \).
B2, \(1 - \frac{5}{\sqrt{196}} \left( \frac{5}{\sqrt{25}} - \sqrt{5} \right)^{2}\).
B3, \(\left( -\frac{5}{4} \right)^{2} - \sqrt{\frac{9}{4}} \left( -4.5 \right) - \frac{25}{16} \sqrt{\frac{64}{9}} \).