Решите уравнение: 100x^2-16=0.

\[100x^{2} - 16 = 0\]

\[100x^{2} = 16\]

\[x^{2} = \frac{16}{100} = \frac{4}{25}\]

\[x = \pm \frac{2}{5} = \pm 0,4.\]