August 2018 2 13 Report
Zapisz w jak najprostszej postaci:
a) (x+4) + (2x-6)
b) -(2y + 3x) + (-4y + 2x + 1)
c) -(x - 2xy) - (4x + xy) + (xy - x)
d) (x² + 2x + 1) - (x² - 4x + 3)

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