Question

Solve it.
1) x^3-x
2) 18a^2 -32​

Answer 1

${x}^{3} - x \\ = x( {x}^{2} - 1) \\ = x(x + 1)(x - 1) \\ \\ 18 {a}^{2} - 32 \\ = 2(9 {a}^{2} - 16) \\ = 2(3a + 4)(3a - 4)$