Answer:

I gotchu Expanded form

1: - 10x-10

2: 8x8x8x8x8x8

3: 3x3x3x3

4: - 2x-2x-2-2x-2x

5: 4x4x4x4x4x4x4x4x4x4

Value

1: 100

2: 262,144

3: 81

4: - 32

5: 1,048,576