Question

Simplify

Please provide me appropriate answer​

Answer 1

Answer:

Use a^m÷a^n=(a)^m-n

49×z^-3/7^-3×10×7^-5=(7)^2×z^-3/7^-3×10×z^-5

(7)^2+3×z^-3+5/10

=49×z^-3/7^-3×10×z^-5=(7)^5×z^2/10=7^5/10z^2.