September 2018 1 24 Report

Rozwiąż równanie kwadratowe::

1. x^{2} +7x+12=0
2.4^{2} -16x=0
3.2x^{2} - 12x+18=0
4. x^{2}- 100=0
5. 2x^{2} -x +12=0
6. - x^{2}-10=0
7. - x^{2}+8x-15=0
8. x^{2}-2=0
9.(x-1)(x-2)=20


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