January 2019 1 8 Report
Wykonaj działania na wyrazeniach algebraicznych stosujac odpowiednie wzory skróconego mnożenia
^2do kwadratu
a)(7-y)^2=
b)(x+2y)^2=
c)(x-5)(x+5)=
d)9y^2-16x^2=
e)(1+×^2)-2(x-3)(x+3)=


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