Răspuns :
E(x) = 2x² + 9x - 35
E(x) = 2x² + 14x - 5x - 35
E(x) = 2x*(x+7) - 5x - 35
E(x) = 2x*(x+7) - 5(x+7)
E(x) = (x+7)(2x-5)
E(x) = 2x² + 14x - 5x - 35
E(x) = 2x*(x+7) - 5x - 35
E(x) = 2x*(x+7) - 5(x+7)
E(x) = (x+7)(2x-5)