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Byju's Answer
Standard XII
Mathematics
Integration by Partial Fractions
Simplify: x...
Question
Simplify:
(
x
−
5
)
(
x
−
3
)
(
x
2
−
9
x
+
14
)
(
x
2
−
12
x
+
35
)
(
x
−
3
)
.
A
x
−
1
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B
x
−
2
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C
x
−
7
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D
(
x
−
1
)
(
x
−
2
)
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Solution
The correct option is
D
x
−
2
(
x
−
5
)
(
x
−
3
)
(
x
2
−
9
x
+
14
)
(
x
2
−
12
x
+
35
)
(
x
−
3
)
---- ( 1 )
⇒
x
2
−
9
x
+
14
=
x
2
−
7
x
−
2
x
+
14
=
x
(
x
−
7
)
−
2
(
x
−
7
)
=
(
x
−
7
)
(
x
−
2
)
---- ( 2 )
⇒
x
2
−
12
x
+
35
=
x
2
−
7
x
−
5
x
+
35
=
x
(
x
−
7
)
−
5
(
x
−
7
)
=
(
x
−
5
)
(
x
−
7
)
---- ( 3 )
⇒
(
x
−
5
)
(
x
−
3
)
(
x
−
7
)
(
x
−
2
)
(
x
−
5
)
(
x
−
7
)
(
x
−
3
)
[ Substituting equation ( 2 ) and ( 3 ) in equation ( 1 ) ]
⇒
(
x
−
2
)
∴
(
x
−
5
)
(
x
−
3
)
(
x
2
−
9
x
+
14
)
(
x
2
−
12
x
+
35
)
(
x
−
3
)
=
(
x
−
2
)
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0
Similar questions
Q.
Simplify:
(
x
+
3
)
(
x
2
−
5
x
+
7
)
Q.
Simplify the rational expressions into lowest forms.
(i)
5
x
+
20
7
x
+
28
(ii)
x
3
−
5
x
2
3
x
3
+
2
x
4
(iii)
6
x
2
−
5
x
+
1
9
x
2
+
12
x
−
5
(iv)
(
x
−
3
)
(
x
2
−
5
x
+
4
)
(
x
−
1
)
(
x
2
−
2
x
−
3
)
Q.
Which of the following are quadratic equations?
(i) x
2
+ 6x − 4 = 0
(ii)
3
x
2
-
2
x
+
1
2
=
0
(iii)
x
2
+
1
x
2
=
5
(iv)
x
-
3
x
=
x
2
(v)
2
x
2
-
3
x
+
9
=
0
(vi)
x
2
-
2
x
-
x
-
5
=
0
(vii) 3x
2
− 5x + 9 = x
2
− 7x + 3
(viii)
x
+
1
x
=
1
(ix) x
2
− 3x = 0
(x)
x
+
1
x
2
=
3
x
+
1
x
+
4
(xi) (2x + 1) (3x + 2) = 6(x − 1) (x − 2)
(xii)
x
+
1
x
=
x
2
,
x
≠
0
(xiii) 16x
2
− 3 = (2x + 5) (5x − 3)
(xiv) (x + 2)
3
= x
3
− 4
(xv) x(x + 1) + 8 = (x + 2) (x − 2)