เลขยกกำลังและเศษส่วน

[aoferingstar]

\[ถ้า 4^{2x-3} \bullet 3^{2x-4} \bullet 5^{2x-2} = \frac{5}{3} แล้ว 2^{4x} - 3^{2x} = ?\]

\[\left[\frac{1}{(0.4)^2} + \frac{1}{(0.25)}^2\right] \div \left[\frac{(0.222 \div 0.06)^3}{(3.38 \div 2.6)^2}\right] = ?\]

\[\left(\frac{7\frac{3}{9}\div 6\frac{2}{7} }{0.048 \div 0.16}\right)^5 - \left(\frac{3\frac{2}{5} \times \frac{0.056}{0.04} }{\frac{0.234}{0.12} \times \frac{0.456}{0.12} }\right) = ?\]

\[\left(2.6 \times 3\frac{4}{9}\right) + \left(3.74 \times 12.62 \div 1\frac{2}{21} \right) - \left(4\frac{7}{12} \div 0.17 \right) = ?\]