Algebra Ii Unit V: Quadratics Unit Notes Packet Functions Worksheet Page 18
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23Perfect Square Trinomial: Some quadratics are perfect square trinomials. They
follow the patterns below.
2
2
2
a
2
ab
b
(
a
b
)
+
+
=
+
2
2
2
a
2
ab
b
(
a
b
)
−
+
=
−
Practice: Factor each quadratic below.
2
2
7.
12
36
8.
8
16
x
x
x
− x
+
+
+
3
2
2
2
12
18
x
x
x
9.
10.
4
x
20
x
25
−
+
+
+
2
2
9
x
− x
6
1
11.
12.
16
x
24
x
9
+
+
+
1
2
2
9
x
3
x
13.
14.
4
32
64
x
x
−
+
−
+
4
18
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