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Byju's Answer
Standard VIII
Mathematics
Factorization of a Quadratic Trinomial
Factorize eac...
Question
Factorize each of the following algebraic expression:
x
2
− 22x + 120
Open in App
Solution
To
factorise
x
2
-
22
x
+
120
,
we
will
find
two
numbers
p
and
q
such
that
p
+
q
=
-
22
and
pq
=
120
.
Now
,
(
-
12
)
+
(
-
10
)
=
-
22
and
(
-
12
)
×
(
-
10
)
=
120
Splitting
the
middle
term
-
22
x
in
the
given
quadratic
as
-
12
x
-
10
x
,
we
get
:
x
2
-
22
x
+
12
=
x
2
-
12
x
-
10
x
+
120
=
(
x
2
-
12
x
)
+
(
-
10
x
+
120
)
=
x
(
x
-
12
)
-
10
(
x
-
12
)
=
(
x
-
10
)
(
x
-
12
)
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