Question

Which of the following is not equivalent to 1/25?

1. 5^(-3)x5

2. 5^(-1)x5^(-1)

3. 5^(3)x5^(-5)

4. 5^(-2)x5^(4)

Answer 1

What do the up arrows mean? I may be able to help if you tell me.

Answer 2

The last one one, 5^(-2)*5^(4) = 25

25 is not equal to 1/25

Work shown below