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Byju's Answer
Standard IX
Mathematics
Factor Theorem
Find whether ...
Question
Find whether
x
−
1
is a factor of
2
x
2
−
5
x
+
3
.
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Solution
Let
p
(
x
)
=
2
x
2
−
5
x
+
3
By the factor theorem,
x
−
1
is a factor of
p
(
x
)
, if
p
(
1
)
=
0
Find the value of
p
(
1
)
p
(
1
)
=
2
x
2
−
5
x
+
3
.........(Substitute
x
=
1
)
p
(
1
)
=
2
(
1
)
2
−
5
(
1
)
+
3
0
=
2
−
5
+
3
0
=
−
3
+
3
0
=
0
Therefore,
x
−
1
is a factor of
p
(
x
)
.
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0
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