Example 1.7.6
  1. \(\begin{aligned}[t] (-2)^2\amp=(-2)(-2)\\ \amp=4 \end{aligned}\)

  2. \(\begin{aligned}[t] (-2)^3\amp=(-2)(-2)(-2)\\ \amp=-8 \end{aligned}\)

  3. \(\begin{aligned}[t] (-2)^4\amp=(-2)(-2)(-2)(-2)\\ \amp=16 \end{aligned}\)

in-context