Question

Решите пожалуйста уравнение ​

Answer 1

$9x^{2} + 10x + 1 = 0\D = b^{2} - 4ac \D = 10^{2} - 4 * 9 * 1 = 100 - 36 = 64$

$X1 =frac{-10-sqrt{64} }{2*9} = frac{-10-8}{18}= -1\X2 =frac{-10+8}{18} = frac{-2}{18} = -frac{1}{9}$