October 2018 2 42 Report
Akar persamanan dari:
a.)  x^{2}-1=0
b.)  4x^{2}+4x+1=0
c.) -3 x^{2}-5x+2=0
d.)  2x^{2} -x-3=0
e.)  x^{2}-x+ \frac{1}{4}=0

tolong kasih caranya ya! :D

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