Lời giải:
$2x^3-1=1$
$\Leftrightarrow x^3=1\Leftrightarrow x=1$
Do đó:
$\frac{y-25}{16}=\frac{z+9}{25}=\frac{x+16}{9}=\frac{17}{9}$
\(\Rightarrow \left\{\begin{matrix} y=16.\frac{17}{9}+25=\frac{497}{9}\\ z=25.\frac{17}{9}-9=\frac{344}{9}\end{matrix}\right.\)