Trinomial Factoring
7
x
2
+
19
x
-
6
=
7
x
2
-
2
x
+
21
x
-
6
=
x
(
7
x
-
2
)
+
3
(
7
x
-
2
)
=
(
7
x
-
2
)
(
x
+
3
)
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