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Descompuneti in factori: a) x^2+3x-4 b)x^2+5x-6 c)x^2-10x-11 d)x^2-x-14 e)x^2-3x-4 f)x^2+5x-14 g)x^2-7x-18 h)x^2-2x-15 i)x^2+2x-24 j)x^2+2x-48 k)x^2-5x-50 l)x^2+2x-35​