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OpenStudy (anonymous):
The sum of the squares of two consecutive odd integers is 74. Find the two integers.
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OpenStudy (dumbcow):
odd integer can be represented as 2n+1 and the next odd int would 2n+3 so you have:
(2n+1)^2 + (2n+3)^2 = 74
solve for n
OpenStudy (anonymous):
i dont understand it..
OpenStudy (anonymous):
i dont remember how to solve n
OpenStudy (dumbcow):
hmm i guess an easier way is to look at perfect squares and which ones add up to 74
1,3 = 1^2 + 3^2 = 10
3,5 = 3^2 + 5^2 = 34
....
OpenStudy (anonymous):
so its 3 and 5?
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OpenStudy (dumbcow):
just remember when you find it that their negative counterparts are answers too because we square them
-5,-3, = (-5)^2 + (-3)^2 = 34
...
OpenStudy (dumbcow):
no sum of 3 and 5 squared is 34...keep going try 5,7 7,9 9,11
has to equal 74
OpenStudy (anonymous):
5 and 7
OpenStudy (dumbcow):
correct
OpenStudy (anonymous):
thank you!
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OpenStudy (dumbcow):
your welcome
OpenStudy (anonymous):
Your first method was nicer :( You can't brute force it once you get up to bigboy numbers
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