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A19­5FactoringTriNomsPart1.notebook
April 06, 2015
Algebra 1
Ch.9 Notes Page 52
P52 9­5 Factoring Trinomials Part 1
Sep 2­8:31 AM
Factoring ­ (Opposite of Distributing)
ax2 + bx + c = (x + __)(x + __)
Find two numbers that Add to b and Multiply to ac
when b and c are positive
x2 + 6x + 8
ac = 8
b = 6
2 and 4
x2 + 7x + 12
ac = 12
b = 7
3 and 4
x2 + 21x + 20
ac = 20
b = 21
1 and 20
Mar 4­8:09 AM
1
A19­5FactoringTriNomsPart1.notebook
April 06, 2015
Find two numbers that Add to b and Multiply to c
when b is negative and c is positive
x2 ­ 17x + 42
ac = 42
b = ­17
x2 ­ 10x + 25
x2 ­ 11x + 18
ac = 25
b = ­10
ac = 18
b = ­11
Apr 2­8:19 AM
Find two numbers that Add to b and Multiply to c
when c is negative
x2 + 6x ­ 27
ac = ­27
b = 6
x2 ­ 3x ­ 40
ac = ­40
b = ­3
x2 ­ x ­ 56
ac = ­56
b = ­1
Apr 2­8:19 AM
2
A19­5FactoringTriNomsPart1.notebook
April 06, 2015
HW #60
9­5 P521 #1­32,65­70
Please put your name and class period at the top of the homework.
Also include the homework number.
Nov 19­3:19 PM
3
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