November 2018 1 29 Report

Wyznacz iloczyn korzystajac ze wzoru skróconego mnożenia.

a) (x+4)(x+4)
b) (x-6)(x-6)
c) (x+9)(x+9)
d) (x-½)(x-½)
e) (x-5)(x+5)
f) (x+¼)(x-¼)

Kwadrat sumy: (a+b)²=a²+2ab+b²

Kwadrat różnicy: (a-b)²=a²-2ab+b²

Różnica kwadratów: a²-b²=(a-b)(a+b)


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