Simplify and express each as a rational number:

MATHEMATICS · Multi-part · CBSE · Mathematics · Number Systems · Number Systems

Problem

Simplify and express each as a rational number: (1) (49)6×(49)−4\left(\frac{4}{9}\right)^6 \times \left(\frac{4}{9}\right)^{-4} (2) (−78)−3×(−78)2\left(\frac{-7}{8}\right)^{-3} \times \left(\frac{-7}{8}\right)^2 (3) (43)−3×(43)−2\left(\frac{4}{3}\right)^{-3} \times \left(\frac{4}{3}\right)^{-2}

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