ba9i9leyvivonaynl ba9i9leyvivonaynl

07-04-2016
Mathematics

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What number complete the square x^2 +\- bx

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apologiabiology apologiabiology

07-04-2016

take 1/2 of b and squaer it so (b/2)^2 would complete the square (sign doesn't matter becaus when squareing, sign goes positive)

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