Question

1 - 25x2 equaçao do 2 grau

Answer 1

$1-25x^2=\\ \\ -25x^2=-1\\ \\ 25x^2=1\\ \\ x^2=\frac{1}{25}\\ \\ x=\pm\sqrt{\frac{1}{25}}\\ \\ x=\pm \frac{1}{5}$