(x-3) ( x²+3x+9) to get x³-3x+9
Answers
Answered by
3
(
x
−
3
)
(
x
2
+
3
x
+
9
)
Expand
(
x
−
3
)
(
x
2
+
3
x
+
9
)
by multiplying each term in the first expression by each term in the second expression.
x
x
2
+
x
(
3
x
)
+
x
⋅
9
+
(
−
3
x
2
−
3
(
3
x
)
−
3
⋅
9
)
x
3
−
27
x
−
3
)
(
x
2
+
3
x
+
9
)
Expand
(
x
−
3
)
(
x
2
+
3
x
+
9
)
by multiplying each term in the first expression by each term in the second expression.
x
x
2
+
x
(
3
x
)
+
x
⋅
9
+
(
−
3
x
2
−
3
(
3
x
)
−
3
⋅
9
)
x
3
−
27
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