Question

Maths problem in indices. Pls help​

Answer 1

x = 9

Explanation:

using the rule of indices

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

`5^(x)` =
`(5^(8) )/(5^(-1) )` =
`5^((8-(-1)))` =
`5^((8+1))` =
`5^(9)`

since bases on both sides are equal, both 5 , then equate indices

x = 9