September 2018 2 39 Report
Doprowadz do najprostszej postaci wyrażenia.

a) (3a+b)^2-2a(4a-b)=
b) (2a+3b)^2-4a(a-2b)+(a+b)(a-9b)
c) (x-1)^2+17-(x+2)^2+5(x-2)

(pier10+2pier x)(7+4x)(pier7-2pier x)


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