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>>
CBSE XII
>>
Math
>>
Determinants
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Q)
Without expanding show that
|
x
2
+
x
x
+
1
x
−
2
2
x
2
+
3
x
−
1
3
x
3
x
−
3
x
2
+
2
x
+
3
2
x
−
1
2
x
−
1
|
=
x
A
+
B
Also find A and B.
(
A
)
A
=
|
1
1
1
−
4
0
0
3
−
3
3
|
a
n
d
B
=
|
0
1
−
2
−
4
0
0
3
−
3
3
|
(
B
)
A
=
|
1
−
1
1
−
4
0
0
3
−
3
3
|
a
n
d
B
=
|
0
1
2
−
4
0
0
3
−
3
3
|
(
C
)
A
=
|
1
1
−
1
−
4
0
0
3
−
3
3
|
a
n
d
B
=
|
0
−
1
−
2
−
4
0
0
3
−
3
3
|
(
D
)
A
=
|
1
1
1
−
4
0
0
−
3
3
3
|
a
n
d
B
=
|
0
1
−
2
−
4
0
0
−
3
3
3
|
Share
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