а) (5x²-12x+4) / (6-15x) = (5x²-12x+4) / (-3(5x-2)) = -(5x²-12x+4) / (3(5x-2))
б) (5x²-12x+4) / (7x²+13x-2) = (5x²-12x+4) / ((x-2)(7x+1))
а) (5x²-12x+4) / (6-15x) = (5x²-12x+4) / (-3(5x-2)) = -(5x²-12x+4) / (3(5x-2))
б) (5x²-12x+4) / (7x²+13x-2) = (5x²-12x+4) / ((x-2)(7x+1))