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glittergurl0101
glittergurl0101 glittergurl0101
  • 19-03-2015
  • Mathematics
Answered

Can someone help me factor this?


\(x^{2} -4x+4\)

A\((x+2)^{2}\)
B\((x-2)^{2}\)
C\((x+4)^{2}\)
D\((x-4)^{2}\)

Thanks!

Verified Answer :

eu99li
eu99li eu99li
  • 19-03-2015


(a+b)^2=a^2+2ab+b^2

(a-b)^2=a^2-2ab+b^2

x^2-4x+4=x^2- 22x +2^2=(x-2)^2

The answer is B

You can check like this:

(x-2)^2=(x-2)(x-2)=x*x-2x-2x+4=x^2-4x+4

Answer Link

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