Question

Simplify fully, does anyone know ?

Answer 1

see explanation

Explanation:

Using the rule of exponents

`(a^(m) )/(a^(n) )` =
`a^((m - n))` , then

(a)

`(x^(7) )/(x^(3) )` =
`x^((7-3))` =
`x^(4)`

(b)

`(y^(5) )/(y^(4) )` =
`y^((5-4))` =
`y^(1)` = y

Answer 2

Here's an explanation! :)