October 2018 1 18 Report

rozwiąż równania kwadratowe

a)x^2+6x+9=0

b)x^2+6x-7=0

c)3x^2+2x-2=0

d)-3x^2=4x+2=0

e)5x^2-2x+1=0

f) 3x^2-12=0


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