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Wednesday, 16 december 2009

Ecuatia de gradul 3

Proposed by HappyFunkyOffline
(2 comments)10.518 times displayed

Am o problema in variantele din 2009 pt bac si m-am impotmolit la o chestie:
(x+7)3-7=x si se optin solutiile x1 = -8 , x2 = -7 , x3 = -6.

Stie careva cum se face? Stiu ca trebuie cu ecuatia de gradul 3, cu delta din cate mai tin e minte, dar nu mai stiu formula.
Putin ajutor va rog :)


Tags: Ecuatia, de, gradul, 3
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