CPM Homework Help : INT1 Problem 10-71

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10-71.

Rewrite each of the following expressions without parentheses.

$(x + 2)(x - 5)$
Hint (a):
Review the Math Notes box in section 3.2.2

$(y + 2x)(y + 3x)$
Hint (b):
Review the Math Notes box in section 3.2.2
Answer (b):
$y^{2} + 5xy + 6x^{2}$

$(3y - 8)(–x + y)$
Answer (c):
$−3xy + 8x + 3y^{2} − 8y$

$(x - 3y)(x + 3y)$
Hint (d):
Review the Math Notes box in section 3.2.2

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