Tolong di jawab trimakasih!

2)
5^2x-1 = 625
5^2x-1 = 5^4
2x-1 = 4
2x = 4 + 1
2x = 3
x = 3/2

3)
2^2x-1 = 1/32
2^2x-1 = 2^-5
2x-1 = -5
2x = -5 + 1
2x = -4
x = -4/2
x = -2