Question

[(2/7)power4÷(2/7)power2]power-1​

Answer 1

$(( \frac{2}{7} ) {}^{4} \div ( \frac{2}{7} ) {}^{2} ) {}^{ - 1}$

$(( \frac{16}{2401} ) \div ( \frac{4}{49} )) {}^{ - 1}$

$( \frac{16}{2401} \times \frac{49}{4} ) {}^{ - 1}$

$( \frac{4}{49} \times \frac{1}{1} ) {}^{ - 1}$

$( \frac{4}{49} ) {}^{ - 1}$

$\frac{49}{4}$

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