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Алинусия1
@Алинусия1
July 2022
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Упростите пожалуйста:1) (c-2d)^2-(c-d)(c+d); 2) (k+n)(n-k)-(2k+n)^2
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eshkere5
1)2c-4d-（c-d）^2
2)kn-k^2+n^2-nk-4k^2+4kn+n^2
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SofiGoldFox
1) с^2-4сd+4d^2-c^2+d^2= -4cd+4d^2+d^2=5d^2-4cd
2) n^2-k^2-4k^2-4kn-n^2=-4kn-5k^2
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Thanks 1
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Answers & Comments
2)kn-k^2+n^2-nk-4k^2+4kn+n^2
2) n^2-k^2-4k^2-4kn-n^2=-4kn-5k^2