\[5 \cdot (x - 2)(x + 2)(x - 5) = 0\ \]
\[5 \cdot \left( x^{2} - 4 \right)(x - 5) = 0\]
\[5 \cdot \left( x^{3} - 5x^{2} - 4x + 20 \right) = 0\]
\[5x^{3} - 25x^{2} - 20x + 100 = 0.\]