Question

simplify and Express each as the rational number

Answer 1

→ - 512/343 × 49/64
→ -8/7

Answer 2

I know that. ...
A^m×A^n=A ^(m+n)
so....
(-7/8)^-3×(-7/8)^2
(-7/8)^-3+2
(-7/8)^-1
we know that (A/B)^-1
then it becomes (B/A)
so. ..
( -7/8 )^-1
(-8/7) answer
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