Question

simplify and express in positive exponent:(-7/9)^-8×(-7/9)^-11×(-7/9)

Answer 1

$\bigg(-\dfrac{7}{9} \bigg)^{-8} \times \bigg(-\dfrac{7}{9} \bigg)^{-11} \times \bigg(-\dfrac{7}{9} \bigg)$

$=\bigg(-\dfrac{7}{9} \bigg)^{-8 - 11 + 1}$

$=\bigg(-\dfrac{7}{9} \bigg)^{-18}$

$=\bigg(-\dfrac{9}{7} \bigg)^{18}$

Answer 2

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