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Byju's Answer
Standard VIII
Mathematics
Factorisation by Regrouping Terms
Factorize the...
Question
Factorize the following polynomials.
(
x
2
−
x
)
2
−
8
(
x
2
−
x
)
+
12
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Solution
The polynomial is
(
x
2
−
x
)
2
−
8
(
x
2
−
x
)
+
12
y
=
(
x
2
−
x
)
Then the polynomial becomes,
y
2
−
8
y
+
12
=
y
2
−
6
y
−
2
y
+
12
=
y
(
y
−
6
)
−
2
(
y
−
6
)
=
(
y
−
2
)
(
y
−
6
)
=
(
x
2
−
x
−
2
)
(
x
2
−
x
−
6
)
Now both factors can be further factorized,
(
x
2
−
2
x
+
x
−
2
)
(
x
2
−
3
x
+
2
x
−
6
)
=
{
x
(
x
−
2
)
+
1
(
x
−
2
)
}
{
x
(
x
−
3
)
+
2
(
x
−
3
)
}
=
(
x
+
1
)
(
x
−
2
)
(
x
+
2
)
(
x
−
3
)
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0
Similar questions
Q.
The factors of
(
x
2
−
x
)
−
8
(
x
2
−
x
)
+
12
=
0
are
Q.
Factorize the following polynomials.
(i) (x
2
– x)
2
– 8 (x
2
– x) + 12
(ii) (x – 5)
2
– (5x – 25) – 24
(iii) (x
2
– 6x)
2
– 8 (x
2
– 6x + 8) – 64
(iv) (x
2
– 2x + 3) (x
2
– 2x + 5) – 35
(v) (y + 2) (y – 3) (y + 8) (y + 3) + 56
(vi) (y
2
+ 5y) (y
2
+ 5y – 2) – 24
(vii) (x – 3) (x – 4)
2
(x – 5) – 6
Q.
Factorize each of the following polynomials.
x
3
+
x
2
+
x
−
14
Q.
The expression
x
4
+ 8
x
2
+ 16 can be factorized as
Q.
The expression
x
4
+
8
x
2
+
16
can be factorized as:
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Standard VIII Mathematics
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