Question

Simplify (m-5)(m^2+5m-6)

Answer 1

$\begin{gathered} (m-5)(m^2\text{ +5m-6)} \\ By\text{ expanding we have} \\ m((m^2\text{ +5m-6})\text{ - 5(}(m^2\text{ +5m-6)} \\ m^3+5m^2-6m-5m^2\text{ - 25m +30} \\ m^3\text{ -31m +30} \end{gathered}$