How do you evaluate this expression when s = 7, a = 5, m = 3, and t = 4 (s+1)(s^2-s+1)?

Aug 24, 2017

See a solution process below:

Explanation:

For each of occurrence of $\textcolor{red}{s}$ in the expression substitute $\textcolor{red}{7}$

For this problem the variables $a$ and $m$ and $t$ are extraneous or not used and therefore not needed.

$\left(\textcolor{red}{s} + 1\right) \left({\textcolor{red}{s}}^{2} - \textcolor{red}{s} + 1\right)$ becomes:

$\left(\textcolor{red}{7} + 1\right) \left({\textcolor{red}{7}}^{2} - \textcolor{red}{7} + 1\right) \implies$

$8 \left(49 - \textcolor{red}{7} + 1\right) \implies$

$8 \cdot 43 \implies$

$344$