December 2018 1 142 Report
Persamaan kuadrat  x^{2} - 2x - 1 = 0 dengan akar-akar  x_{1} dan  x_{2} susunlah persamaan kuadrat yang akar-akarnya α =  x_{1}^{2} +  x_{2}^{2} dan β =  x_{1} +  x_{2} adalah ...
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