December 2018 1 31 Report
Rozwiąż równianie :
(x-2) (x+2) + 3x = (4+x) (x-4)
(4x-1)² + 18x = 16 (x-3) (x+3)
(x-9)² - (x+9)² = (x+3)² - (x-3)²
x² - (5-x)² = 4x² - (2x-1) (2x+1)

Daję naj. :))
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