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gasto

Math notation for binomial square

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If we write:

 

(a+b)²

 

it means:

 

(a+b)(a+b)

 

however, if I want to mean the square of the sum, how would I write it algebraically?

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I don't understand the question.

 

a + b = sumab

sumab2 = (a + b)2 = (a + b)(a + b)

----

Or with numbers to show an example:

3 + 4 = 7
72 = (3 + 4)2 = (3 + 4)(3 + 4)
49 = 9 + 12 + 12 + 16
49 = 49
Edited by Lactose!

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Yes, it is equivalent, what an idiot of me...

(a+b)2 is square of the sums, perhaps you were confusing it with the sum of the squares, (a2 + b2), ala pythagoras'?

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