Question

5 power x = 4, then 5 power x-1 equals ?

Answer 1

Step-by-step explanation:

5

2x−1

−25

x−1

=2500

5

5

2x

−5

2(x−1)

=2500

5

5

2x

−

25

5

2x

=2500

5

2x

[

5

1

−

25

1

]=2500

5

2x

[

25

4

]=2500

5

2x

=

4

2500×25

5

2x

=15625

5

2x

=5

6

2x=6

x=3