Kaykaylamracw Kaykaylamracw

23-12-2016
Mathematics

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What number should be added to the expression x^2 + 2x to change it into a perfect square trinomial?

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Nirina7 Nirina7

25-12-2016

the answer is (x+1)²= x²+2x+1
so x^2 + 2x must be added 1 to become x²+2x+1=(x+1)²

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