Find the two consecutive odd positive integers sum of whose squares is 290
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Answered by
4
Assumption
First odd positive integers be t.
Hence,
Next integer will be t + 2
t² + (t + 2)² = 290
t² + t² + 2 × t × 2 + 2² = 290
t² + t² + 4t + 4 - 290 = 0
2t² + 4t - 286 = 0
2(t² + 2t - 143) = 0
t² + 2t - 143 = 0
t² + 13t - 11t - 143 = 0
t(t + 13 ) - 11 (t + 13 ) = 0
(t - 11 ) (t + 13 ) = 0
t - 11= 0
t = 11
t + 13 = 0
t = -13
Hence,
t ≠ - 13
t = 11
Therefore,
Answered by
7
Answer:
Two consecutive odd integers are 11 and 13.
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