8.7 ­ Factoring Special Cases.notebook
April 28, 2015
4/28: Warm Up
Factor Completely:
1. x2 + 8x + 16
2. 3x2 ­ 21x + 30
3. 6x2 + 7x ­ 5
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
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8.7 ­ Factoring Special Cases.notebook
8.7: Factoring Special Cases
April 28, 2015
Date: 4/28
Recall: The square of a binomial
Perfect-Square Trinomial
How to recognize a perfect­square trinomial:
1. The first and last terms are ______________ ____________.
2. The middle term is _________ the product of one factor of
from the first term and one factor from the last term.
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
Ex 1). Factor completely:
a) x2 – 4x + 4
b) x2 + 6x + 9
c) x2 – 14x + 49
d) x2 + 10x + 25
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
Ex 2). Suppose the area of a square can be represented by the
expression 9x2 + 24x + 16. What is an expression for the length of
one side of a the square?
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
Recall: The product of a sum and a difference
Difference of Two Perfect Squares
How to recognize the difference of two perfect squares:
1. The first and last terms are ______________ ____________.
2. There are only _________ terms.
3. The two terms are being _________________.
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
Ex 3). Factor completely:
a) x2 – 4
b) 49x2 – 36
c) 12x2 – 25
d) 12x2 – 3
e) 18x2 – 2
f) 432x2 – 147y2
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
Homework:
pg. 526 #1 – 3, 10 – 38(e)
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8.7 ­ Factoring Special Cases.notebook
April 28, 2015
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