CPM Homework Help : INT3 Problem 2-67

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2-67.

Multiply each of the following expressions.

$2x^2(3x+4x^2y)$
Answer (a):
$6x^3+8x^4y$

$(x^3y^2)^4(x^2y)$
Hint (b):
Remember that the $4^{\text{th}}$ power means to use the expression as a multiplier four times.
$\left(x^{12}y^8\right)\left(x^2y\right)$
More Help (b):
How can you rewrite this using the Commutative and Associative Properties of Multiplication to simplify it further?

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