June 2022 1 68 Report
1. Scrieti ca interval multimea A={x apartine R | |2x+3| ≤ 5
2. Rezolvati inecuatia 4x - 5≤ 3x - 2 x apartine N
3. Rezolvati inecuatia x apartine R 2x(x-1) - 3(x+2) ≤ 2x(x-3) +5x +6
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se considera paralelogramul ABCD de centru O. calculati OA+OB+OC+OD. (OA, OB, OC si OD sunt vectori).
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Rezolvati, prin metoda reducerii, urmatoarele sisteme de ecuatii liniare: a) { 2x - 3y = 7,5 { 5x + y = -4,1 b) { 6x + 7y = 4 { -2x + 9y =17
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