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Statistics Examples
Step-by-Step Examples
Statistics
Algebra Review
Factor by Grouping
2
x
2
+
6
x
−
x
−
3
2
x
2
+
6
x
-
x
-
3
Step 1
Factor
out the
greatest common factor
from each group.
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Step 1.1
Group the first two
terms
and the last two
terms
.
(
2
x
2
+
6
x
)
−
x
−
3
(
2
x
2
+
6
x
)
-
x
-
3
Step 1.2
Factor
out the
greatest common factor
(
GCF
) from each group.
2
x
(
x
+
3
)
−
(
x
+
3
)
2
x
(
x
+
3
)
-
(
x
+
3
)
2
x
(
x
+
3
)
−
(
x
+
3
)
2
x
(
x
+
3
)
-
(
x
+
3
)
Step 2
Factor
the
polynomial
by
factoring
out the
greatest common factor
,
x
+
3
x
+
3
.
(
x
+
3
)
(
2
x
−
1
)
(
x
+
3
)
(
2
x
-
1
)
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x
2
1
2
√
π
∫
x
d
x
⎤
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⎦
[
x
2
1
2
π
∫
x
d
x
]
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