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Mathematics, 11.06.2020 19:57 electrofy456

Can someone help me with this? x^2-4x+4

I understand -2 x 2=-4, but I’m not seeing how to add the factors to get +4, because -2+2=0. I’ve got the first half of the solution, but not the second.

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Can someone help me with this? x^2-4x+4

I understand -2 x 2=-4, but I’m not seeing how...
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