Trinomial Factoring
7
x
2
-
4
x
-
3
=
7
x
2
-
7
x
+
3
x
-
3
=
7
x
(
x
-
1
)
+
3
(
x
-
1
)
=
(
x
-
1
)
(
7
x
+
3
)
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