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¼x²-25=(½x+5)(½x-5)
x²-6=(x-√6)(x+√6)
x²+6x+9=(x+3)²
2) (1/2x-5)(1/2x+5)
3) (x-pierwisatek(6))*(x+pierwiastek(6))
4) (X+3)(x^2-3x+9)
5) (x+3)^2
6) (x-2)(x+3)(x+2)
7) (5x-4)(x-1)(x+1)
8) (2x+1)(4x^2-2x+1)(X+3)