November 2018 1 20 Report
Prosze o wytułmaczenia zadania dokładnie, bo chciałabym to zrozumiec.
(4.11 str. 33 - prosto do matury )
a ) (2x-1)^{2} -4(x-3)(x+3)

b) (x+2y)^{2} -(x+2y)(x-2y)+2(x-2y) ^{2} +4xy
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