Question

Factorise x cube - 4 x​

Answer 1

${x}^{3} - 4x$

$x( {x}^{2} - 4)$

Now we use (a+b) (a-b) formula to factories x^2 - 4x

$x(x - 2)(x + 2)$

Hence the factor is

x , x -2 , x + 2