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Byju's Answer
Standard X
Mathematics
Solving a Quadratic Equation by Factorization Method
The sum of sq...
Question
The sum of squares of two consecutive odd numbers is
202
. Find the numbers.
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Solution
Let the two consecutive odd numbers are
n
and
n
+
2
Sum of their squares is
202
So,
n
2
+
(
n
+
2
)
2
=
202
n
2
+
n
2
+
4
+
4
n
=
202
2
n
2
+
4
n
−
198
=
0
n
2
+
2
n
−
99
=
0
n
2
+
11
n
−
9
n
−
99
=
0
n
(
n
+
11
)
−
9
(
n
+
11
)
=
0
(
n
−
9
)
(
n
+
11
)
=
0
n
=
9
or
n
=
−
11
For
n
=
9
,
the two numbers are
9
and
11
For
n
=
−
11
the two numbers are
−
11
and
−
9
So, the numbers are
9
,
11
or
−
11
,
−
9
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