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Byju's Answer
Standard VI
Mathematics
Subtraction of Unlike Terms
Find the sum ...
Question
Find the sum of all values of
x
, so that
16
(
x
2
+
3
x
−
1
)
=
8
(
x
2
+
3
x
+
2
)
.
A
0
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B
3
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C
−
3
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D
−
5
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Solution
The correct option is
C
−
3
Given,
16
(
x
2
+
3
x
−
1
)
=
8
(
x
2
+
3
x
+
2
)
As, 16 =
2
4
a
n
d
8
=
2
3
2
4
(
x
2
+
3
x
−
1
)
=
2
3
(
x
2
+
3
x
+
2
)
So, we can write
4
(
x
2
+
3
x
−
1
)
=
3
(
x
2
+
3
x
+
2
)
4
x
2
+
12
x
−
4
=
3
x
2
+
9
x
+
6
4
x
2
+
12
x
−
4
−
(
3
x
2
+
9
x
+
6
)
=
0
4
x
2
+
12
x
−
4
−
3
x
2
−
9
x
−
6
=
0
x
2
+
3
x
−
10
=
0
x
2
+
5
x
−
2
x
−
10
=
0
x
(
x
+
5
)
−
2
(
x
+
5
)
=
0
(
x
−
2
)
(
x
+
5
)
=
0
So,
x
=
2
,
−
5
Sum of values of
x
=
2
+
(
−
5
)
=
−
3
Suggest Corrections
0
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