7a^4*3a^2= ?

Question

Can you show me step-by-step please? Thanks a bunch :3

Answer 1

Wondering what the problem is? Simplify?

a^2(7a^2+3) ?

Answer 2

yes, simplify the expression...
Also, can you help me with a couple more?
Simplify the expression (x^3)^5
Simplify the expression (y^4)^5
Can you help step by step please?

Answer 3

And these please...

simplify the expression each expression...

4^8/4^2(this is in fraction form)
b^2/b^4(this is in fraction form)
28xy^7/32xy^12 (this is in fraction form)

These are the last promblems I promise! Thanks for the help:)