The sum of the square of two consecutive odd natural number is 202. what are the numbers ?
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Step-by-step explanation:
Being a physically challenged person,he could not participate in the athletic competition.
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Answered by
10
Solution :-
Let the two consecutive odd natural
be x and x + 2
Therefore ,
According to the question,
x² + ( x + 2)² = 202
[ By using identity
( a + b) ² = a² + b² + 2ab ]
x² + x² + 4 + 4x = 202
2x² + 4x = 202 - 4
2x² + 4x = 198
2x² + 4x -198 = 0
2( x² + 2x -99) = 0
x² + 2x - 99 = 0
By factorization Method, we get :-
x² - 9x + 11x -99 = 0
x( x - 9) + 11( x - 9) = 0
( x + 11) ( x - 9) = 0
x = -11 or x = 9
[ Natural numbers never be negative ]
Therefore,
x = 9
x + 2 = 9 + 2 = 11
Hence, The two consecutive odd natural numbers are 9 and 11 whose sum is 202
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