November 2021 0 7 Report
решите на множестве R уравнение: a) x^2-20x+84=0 b)6x^2+11x-7=0 v)-x^2=49=0 g)x^2-9.3x=0 назовите коэффициенты уравнения (a=.....и.д.)  a)9x^2-12x-16=0 b)5x^2+3.5x+2.1=0
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