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

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asked Jan 5, 2018 225k views

3 votes

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

Mathematics
college

Ktusznio asked

by Ktusznio

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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

Mlang answered Jan 11, 2018

by Mlang

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