CPM Homework Help : PC Problem 1-27

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1-27.

Factor completely.

$81 x ^ { 3 } y - 12 x ^ { 2 } y$
Hint (a):
Factor out the greatest common factor.

$3 ( 2 x + 1 ) + ( x + 5 ) ( 2 x + 1 )$
Hint (b):
Factor $(2x+1)$ out of each term.

$2 ( 3 x - 7 ) ^ { 2 } + ( x - 2 ) ( 3 x - 7 )$
Hint (c):
Write the squared factor twice to visualize what is in common.

$m ( x + y ) + ( x + y ) ^ { 2 }$
Hint (d):
Follow the same procedure in part (c).

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