Who is correct? Explain your reasoning.

Alejandra: 2a2b (-2ab3) - 2 = (2a2b) (-2ab3) 2

= (2a2b) (-2) 2a2 (b3) 2

= (2a2b) 22a2b6 = 8a4b7

Kyle: 2a2b (-2ab3) - 2=2a2b (-2) - 2a (b3) - 2

= 2a2b (4ab-6)

= 2a2bb64a

= ab72

In order to get who was right we need to solve the expression:

2a^2b (-2ab^3) ^-2

The above can be written as fraction to get:

(2a^2b) / (-2ab^3) ^2

= (2a^2b) / (4a^2b^6)

=1/2 (a^ (2-2) b^ (1-6))

=1/2a^0b^-5

=1/2b^ (-5)

This implies that neither of the was right