October 2020 0 33 Report
Rozwiąż równania. a) (x+3)²-1=x²
b) x (x-1) - 4= (x-2)(x+2) - x
c) 0=4 (10-5x) -3 (-3x-5)
d) 2x - 1/3x + 2/5 = 1/3 (4+5x) - 7/30

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