September 2018 2 28 Report

rozwiąż równania

a)(x-9)(x-5)=Xdo kwadratu+56-14x

b)xkwadrat-(x+3)(x+4)=x+20

c)(x-1)(x+1)-x(x+2)-1=2(x+1)

d)4(x+2)do kwadratu=(2x-1)(2x+1)-2(2x-1)


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