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Byju's Answer
Standard VIII
Mathematics
Division of a Polynomial by a Monomial
Determine whe...
Question
Determine whether
(
x
+
1
)
is a factor of the polynomial:
2
x
4
+
9
x
3
+
2
x
2
+
10
x
+
15
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Solution
According to factor theorem, when
f
(
x
)
is divided by
(
x
+
1
)
,
f
(
−
1
)
=
0
f
(
x
)
=
2
x
4
+
9
x
3
+
2
x
2
+
10
x
+
15
f
(
−
1
)
=
2
(
−
1
)
4
+
9
(
−
1
)
3
+
2
(
−
1
)
2
+
10
(
−
1
)
+
15
=
2
−
9
+
2
−
10
+
15
=
0
∵
f
(
−
1
)
=
0
,
(
x
+
1
)
is a factor of the given polynomial.
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Similar questions
Q.
Determine whether the following polynomial has
(
x
+
1
)
as a factor:
x
4
+
2
x
3
+
2
x
2
+
x
+
1
.
Q.
Determine whether (x-5) is a factor of the polynomial
p
(
x
)
=
2
x
3
−
5
x
2
−
28
x
+
15
.
Q.
Using factor theorem , show that:
(i) (x + 2) is factor of x
2
-
4.
(ii) (x
-
3) is factor of x
3
-
27.
(iii) (x
-
1) is factor of 2x
4
+ 9x
3
+ 6x
2
-
11x
-
6.
(iv) (x + 4) is a factor of x
2
+ 10x + 24.
Q.
Determine whether
(
x
+
2
)
is a factor of
2
x
4
+
x
3
+
4
x
2
−
x
−
7
.
Q.
Using factor theorem, show that:
(x − 1) is a factor of (2x
4
+ 9x
3
+ 6x
2
− 11x − 6)
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