robbinsalexis
robbinsalexis robbinsalexis
  • 23-04-2017
  • Mathematics
contestada

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

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irspow
irspow irspow
  • 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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