Question

Решите уравнение
0,04-C^2=0

Answer 1

$\displaystyle 0,04-c^2=0\\\\\frac{1}{25}-c^2=0\\ \\1-25c^2=0\\-25c^2=-1\\\\c^2=\frac{1}{25}\\ \\c=б\frac{1}{5}$