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x-4-druga
x-8-trzecia
x-12-czwarta
x(x-4)=(x-8)(x-12)+224
x²-4x=x²-12x-8x+96+224
-4x=-20x+320
16x=320 /:16
x=22
x=20
x-4=16
x-8=12
x-12=8
x(x-4)=20*16=320
(x-8)(x-12)=12*8=96
320-96=224
Szukane liczby to: 20, 16, 12, i 8