Question

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

Answer 1

Объяснение:

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