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a) (x+1)do kwadratu + (x-2)do kwadratu - (2x-1)(x+3)=x kw. +2x+1+xkw. -4x+4-2x do szescianu- 3=2x kw. -2x+2-2x do sześcianu
b) 3 + 4√3 + 4 + 8 - 2√3 + 3 - 1 = 2√3 = 17.