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4-75.

Multiply each of the following expressions.

1. $2x^{2}\left(3x + 4x^{2}y\right)$

$6x^{3} + 8x^{4}y$

1. $\left(x^{3}y^{2}\right)^{4}\left(x^{2}y\right)$

Remember that the 4th power means to use the expression as a multiplier four times.

$\left(x^{12}y^{8}\right)\left(x^{2}y\right)$

How can you rewrite this using the Commutative and Associative Properties of Multiplication to simplify it further?