(x4 - 81) by (x + 3)
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1
Answer:
Step-by-step explanation:
x
4
−
81
x
+
3
Simplify the numerator.
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(
x
2
+
9
)
(
x
+
3
)
(
x
−
3
)
x
+
3
Cancel the common factor of
x
+
3
.
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(
x
2
+
9
)
(
x
−
3
)
Expand
(
x
2
+
9
)
(
x
−
3
)
using the FOIL Method.
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x
2
x
+
x
2
⋅
−
3
+
9
x
+
9
⋅
−
3
Simplify each term.
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x
3
−
3
x
2
+
9
x
−
27
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