September 2018 2 9 Report

Przekształc wyrażenie, korzystajac z wzorow skroconego mnozenia:

a) (a-2/3)(a+2/3)

(xy+2)(xy-2)

(3a2-b3)(3a2+b3)

b)(2x2-5y)2

(ab+3c)2

(3k3+2k2)2


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