Question

(4 x 10)^10 (9 x 10)^-15

Answer 1

I wrote you a note on your previous post:

1. Please do NOT use the symbol ' x ' to denote multiplication. Instead, use the
symbol ' * '
2. Please enclose any and all negative exponents in parentheses.

3. Include the instructions for each problem you post.

4. Acknowledge anyone who has helped you (with "thanks"), so that the rest of us will know you have finished work on the problem at hand.

Answer 2

I see you posted your previous question five times, before posting this one, and that you have posted this one twice already. Why are you doing this? This is considered to be spam, and it's wasteful of the time of other users.