(3x^2a-4y^az^3a)2

To simplify the expression (3x^2a - 4y^az^3a)2, we can distribute the 2 to both terms inside the parentheses:

2(3x^2a - 4y^az^3a)

= 2 * 3x^2a - 2 * 4y^az^3a

= 6x^2a - 8y^az^3a

So, the simplified form of (3x^2a - 4y^az^3a)2 is 6x^2a - 8y^az^3a.