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3. Calculează: 4x (2+3)= 4x (3+3) = 4x (4+4) 4x (3+4) (10- 3) x 4 = (15-12) x 4 = (25-18) x 4 = (16-12) x 4 = 2x3x4= 3x3x4= 2x4x4= 15 x 2 x 4 = factori numerici: (2 x 4)+(6x (4x3)+ (5x (9x4)-(3x (8 x 4) + (4x4​