Question

-25 + 100 x ao quadrado igual a zero

Answer 1

$-25+100x^2=0\\ 100x^2=25\\ x^{2} ={25\over100}$

$x=\pm\sqrt{{25\over100}} \\ \\ x=\pm\sqrt{{1\over4}}$

$x=\pm{1\over2}$