Trinomial Factoring
5
x
2
-
x
-
4
=
5
x
2
-
5
x
+
4
x
-
4
=
5
x
(
x
-
1
)
+
4
(
x
-
1
)
=
(
x
-
1
)
(
5
x
+
4
)
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