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Let’s check out your problem:
Find the binomial that completes the factorization.
\newline
w
3
−
216
=
(
‾
)
(
w
2
+
6
w
+
36
)
w^3 - 216 = (\underline{\hspace{3em}})(w^2 + 6w + 36)
w
3
−
216
=
(
)
(
w
2
+
6
w
+
36
)
View step-by-step help
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Math Problems
Algebra 2
Factor sums and differences of cubes
Full solution
Q.
Find the binomial that completes the factorization.
\newline
w
3
−
216
=
(
‾
)
(
w
2
+
6
w
+
36
)
w^3 - 216 = (\underline{\hspace{3em}})(w^2 + 6w + 36)
w
3
−
216
=
(
)
(
w
2
+
6
w
+
36
)
Recognize Perfect Cube:
Recognize that
216
216
216
is a perfect cube,
216
=
6
3
216 = 6^3
216
=
6
3
.
Use Difference of Cubes Formula:
Use the difference of cubes formula:
a
3
−
b
3
=
(
a
−
b
)
(
a
2
+
a
b
+
b
2
)
a^3 - b^3 = (a - b)(a^2 + ab + b^2)
a
3
−
b
3
=
(
a
−
b
)
(
a
2
+
ab
+
b
2
)
.
Substitute and Simplify:
Let
a
=
w
a = w
a
=
w
and
b
=
6
b = 6
b
=
6
, then plug into the formula:
w
3
−
6
3
=
(
w
−
6
)
(
w
2
+
6
w
+
36
)
w^3 - 6^3 = (w - 6)(w^2 + 6w + 36)
w
3
−
6
3
=
(
w
−
6
)
(
w
2
+
6
w
+
36
)
.
Check Multiplication:
Check if the binomial
(
w
−
6
)
(w - 6)
(
w
−
6
)
and the trinomial
(
w
2
+
6
w
+
36
)
(w^2 + 6w + 36)
(
w
2
+
6
w
+
36
)
multiply to give the original expression
w
3
−
216
w^3 - 216
w
3
−
216
.
More problems from Factor sums and differences of cubes
Question
Factor out the greatest common factor. If the greatest common factor is
1
1
1
, just retype the polynomial.
\newline
4
x
3
−
6
x
2
4x^3 - 6x^2
4
x
3
−
6
x
2
\newline
______
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Question
Factor
x
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+
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x
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x
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+
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x
2
+
16
completely.
\newline
All factors in your answer should have integer coefficients.
\newline
______
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Posted 9 months ago
Question
Find the binomial that completes the factorization.
\newline
t
3
+
u
3
=
(
‾
)
(
t
2
−
t
u
+
u
2
)
t^3 + u^3 = (\underline{\hspace{1cm}}) (t^2 - tu + u^2)
t
3
+
u
3
=
(
)
(
t
2
−
t
u
+
u
2
)
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Question
Factor.
\newline
g
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−
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g
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g^2 - 11g + 18
g
2
−
11
g
+
18
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Posted 9 months ago
Question
Factor.
\newline
2
y
3
−
y
2
+
16
y
−
8
2y^3 - y^2 + 16y - 8
2
y
3
−
y
2
+
16
y
−
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\newline
______
\newline
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Posted 9 months ago
Question
Factor.
\newline
2
x
8
+
7
x
2
2x^8 + 7x^2
2
x
8
+
7
x
2
\newline
______
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Posted 10 months ago
Question
Factor.
\newline
9
y
12
+
4
y
5
−
y
2
9y^{12} + 4y^5 - y^2
9
y
12
+
4
y
5
−
y
2
\newline
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Posted 9 months ago
Question
Factor.
\newline
6
a
4
+
3
a
3
−
a
+
2
6a^4 + 3a^3 - a + 2
6
a
4
+
3
a
3
−
a
+
2
\newline
_____
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Posted 9 months ago
Question
Factor.
\newline
4
c
7
−
2
c
5
+
c
2
−
5
4c^7 - 2c^5 + c^2 - 5
4
c
7
−
2
c
5
+
c
2
−
5
\newline
_____
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Posted 9 months ago
Question
Factor.
\newline
7
m
9
+
2
m
6
−
m
3
+
4
m
−
10
7m^9 + 2m^6 - m^3 + 4m - 10
7
m
9
+
2
m
6
−
m
3
+
4
m
−
10
\newline
_____
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Posted 9 months ago
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