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(a + b) = a^2 + 2ab + b^2

(a - b)^2 = a^2 - 2ab + b^2 or you can work like this:

[a + (-b)]^2 = a^2 + 2a(-b) + (-b)^2

(a - b)^2 = a^2 - 2ab + b^2

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Q: How do the squares of sums and differences relate?
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What two square numbers total 21?

There is no pair of perfect squares that sums to 21. And the question is pointless if it is not about perfect squares because in that case there are infinitely many answers.There is no pair of perfect squares that sums to 21. And the question is pointless if it is not about perfect squares because in that case there are infinitely many answers.There is no pair of perfect squares that sums to 21. And the question is pointless if it is not about perfect squares because in that case there are infinitely many answers.There is no pair of perfect squares that sums to 21. And the question is pointless if it is not about perfect squares because in that case there are infinitely many answers.


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http://en.wikipedia.org/wiki/Explained_sum_of_squares


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Alike is the same as Differences means subtractions Sums means additions Quotients means divisions Products means multiplications


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What has the author Carlos J Moreno written?

Carlos J. Moreno has written: 'Sums of squares of integers'