Tính giá trị các biểu thức sau
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10) \(\sqrt{\frac{9}{25}} = -2; \quad |1|4\)
11) \(15 \cdot \frac{-5}{7} - 2 \cdot \frac{-7}{5}\)
12) \(47, 57, 15, 36 + 15, 36, 52, 43\)
13) \(\frac{3}{5} \cdot 1 + \frac{4}{1} \cdot 8\)
14) \(|-0,75| \cdot 1 - \frac{2^{-1}}{2}\)
15) \(\left( \frac{3}{4} - \frac{2}{3} \right) \cdot \frac{5}{11} - \frac{1}{4} \cdot \frac{1}{3} \cdot \frac{5}{11}\)
16) \(\frac{3^3}{1 + \sqrt{36}}\)
17) \(-\frac{3}{7} \cdot (-3)^3 - \sqrt{\frac{4}{9}}\)
18) \(\frac{21 \cdot 5^3}{6 \cdot 4^4}\)
Dạng 2: Tìm \(x\): tìm x thỏa mãn...
10) \(\sqrt{\frac{9}{25}} = -2; \quad |1|4\)
11) \(15 \cdot \frac{-5}{7} - 2 \cdot \frac{-7}{5}\)
12) \(47, 57, 15, 36 + 15, 36, 52, 43\)
13) \(\frac{3}{5} \cdot 1 + \frac{4}{1} \cdot 8\)
14) \(|-0,75| \cdot 1 - \frac{2^{-1}}{2}\)
15) \(\left( \frac{3}{4} - \frac{2}{3} \right) \cdot \frac{5}{11} - \frac{1}{4} \cdot \frac{1}{3} \cdot \frac{5}{11}\)
16) \(\frac{3^3}{1 + \sqrt{36}}\)
17) \(-\frac{3}{7} \cdot (-3)^3 - \sqrt{\frac{4}{9}}\)
18) \(\frac{21 \cdot 5^3}{6 \cdot 4^4}\)
Dạng 2: Tìm \(x\): tìm x thỏa mãn...