February 2019 0 20 Report
Wykonaj działania. Wynik podaj w najprostrzej postaci.

a)  (x+1)^{2} - (x-1)^{2} + (x+2)^{2} +(2-x)^{2}
b) 2(3+x)^{2}-(2-x)^{2}-3(2-x)(2+x)

c)(4x-3y)(4x+3y)-2(4x+3y)^{2} +2(3x-4y)^{2}
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