Inegalitati si nr reale Flashcards by Bianca Luchian

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(a+b+c)2

a2 + b2 + c2 + 2ab +2ac+2bc

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(a+b)3

a3 + b3 + 3a2b + 3ab2

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(a-b)3

a3 - 3a2b + 3b2a - b3

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a3 + b3

(a+b)(a2 - ab +b2)

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a3-b3

(a-b)(a2 +ab+b2)

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(a+b+c)3

a3+b3+c3 + 3(a+b)(a+c)(c+b)

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cand a+b+c=0

a3+b3+c3 = 3abc

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Inegalitati si nr reale Flashcards

(7 cards)