Simplify each of the following using a combination of index laws. Express each answer using positive indices only.
4(a²b⁰)³ₓa(3b⁴)²
__________
6(ab⁵)³ₓ(2a⁶)⁰
4(a²b⁰)³ₓa(3b⁴)²
__________
6(ab⁵)³ₓ(2a⁶)⁰