August 2018 2 22 Report
Z góry dzięki za szybką odpowiedź
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Zapisz w jak najprostszej postaci.
1. a(a+b+c)-b(a-b+c)-c(a-b-c)
2. x(x²+2x+1)-(-4x³+8x²-6):2
3. 12b×(b-1:4)+14×(b²-2b:21)-(b-b²:3)
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