Question

Factorize:
a³ + 0.008

Answer 1

$$\begin{gathered} a^3+0.008=a^3+{\left(0.2\right)}^3 \\ =\left(a+0.2\right)\left[a^2-a\times \left(0.2\right)+{\left(0.2\right)}^2\right] \\ =\left(a+0.2\right)\left(a^2-0.2a+0.04\right) \end{gathered}$$