(5/8) raised to -7 multiplied by (8/5) raised to-4 - Maths - Exponents and Powers

Question

(5/8) raised to -7 multiplied by (8/5) raised to-4 ?

Rishabh Mittal · Accepted Answer

Dear Student,

58-7×85-4=857×584     Since a-n=1an=87-457-4     Since  aman=am-n=8353=853=512125   ANS