Question

Como fazer essa conta? (Passos)
0,16 = 50 x² / 2

Answer 1

$\large\boxed{\begin{array}{l}\sf0,16=\dfrac{16\div4}{100\div4}=\dfrac{4}{25}.\\\sf 0,16=\dfrac{50x^2}{2}\\\sf \dfrac{4}{25}=\dfrac{50x^2}{2}\\\sf \dfrac{4}{25}=25x^2\\\sf 625x^2=4\cdot1\\\sf x^2=\dfrac{4}{625}\\\sf x=\pm\sqrt{\dfrac{4}{625}}\\\sf x=\pm\dfrac{2}{25}\end{array}}$