Respuesta :

Add 25 to get [tex]16x^2=25[/tex].  Divide by 16 to find that [tex]x^2= \frac{16}{25} [/tex].  Taking the square root, we see that [tex]x=+- \frac{4}{5} [/tex] - either positive or negative [tex] \frac{4}{5} [/tex].