August 2018 3 70 Report
Zapisz krócej podaną sumę:

a) 2a + 3b - c - 4a - 3b + 2c=..................................
b) 3x - 2y + 3,5x - y + 2 + o,5y=...............................
c) xy + 3x - y + 1 - 2xy - 2x + y + 1=...........................
d)x² + 2xy - 3y₂ - 2x² - y² - x² + 2xy=.........................
e) ⅙t² + ⅓k²t + ⅓tk² - k²t + ½t² - ⅙tk²=....................
f) u²v² + ¼uv - 1/7u²v² - uv - ½uv + u²v²=..................
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