Question

x}^{2} = 0" alt="5 {x}^3 - 20 {x}^{2} = 0" align="absmiddle" class="latex-formula">

Answer 1

$5x^{2} \times (x - 4) = 0 \\ x^{2} \times (x - 4) = 0 \\ {x}^{2} = 0 \: x = 0 \\ x - 4 = 0 \: x = 4$