CPM Homework Help : CCA2 Problem B-11

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B-11.

Simplify or multiply each of the following expressions as appropriate.

$(3x^2yz^4 )^2$
Answer (a):
$9x^4y^2z^8$

$( \frac { r ^ { 2 } s } { r s ^ { 3 } t } ) ^ { 3 }$
Hint (b):
Simplify inside the parentheses first, then cube.
Answer (b):
$\frac{r^3}{s^{6}t^{3}}$

$(3m + 7)(2m - 1)$
Answer (c):
$6m^² + 11m - 7$

$(x - 3)^2$
Answer (d):
$x^2 - 6x + 9$

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