December 2018 1 37 Report
Rozłóż wyrażenia na czynniki :
 (2x+1)^{2}-(x+5)^{2}
(x-7)^{2} -(4-3x)^{2}
25(x-1)^{2}-9(2+x)^{2}
4(x+3)^{2}-49(1-x)^{2}
5x^{3}-90x^{2}+405x
27x^{3}+18x^{2}+3x
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