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2.(x²-8x+15)
3.(x²-12x+36)
2. (x-5) (x-3) = x(x-3) - 5 (x-3) = xkuadrat - 3x - 5x + 15 = xkuadrat - 8x + 15
3. (x-6)kuadrat = (x-6) (x-6) = x(x-6) -6(x-6) = xkuadrat - 6x - 6x + 36 = x kuadrat - 12x + 36