Автор - sh1ngee

Разложите квадратный трёхчлен 5x”2-8x+3

Ответ

Автор - aselsulaimanova861

Объяснение:

5x {}^{2}  - 8x + 3 = 0 \d = b {}^{2}  - 4ac \  d = 64 - 4 times 5 times 3 = 4 > 0 \ x1 =  frac{8 + 2}{2 times 5}  =  frac{10}{10}  = 1 \ x2 =  frac{8 - 2}{2 times 5}  =  frac{6}{10}  =  frac{3}{5}

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