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23-04-2017
Mathematics

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X^2-4X+??=(X-??)^2? Complete the square to form a true equation

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23-04-2017

To complete the square you need to halve the linear coefficient -4/2, square it, 4, and add that value, giving you:

x^2-4x+4 and that is a perfect square equal to:

(x-2)^2

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