Explanation
Step 1
you have to keep in mind that when you use parentheses the negative symbol is also raised to the power
[tex]\begin{gathered} -2^3=-(2^{^3})=-(2\cdot2\cdot2)=-(8)=-8 \\ \text{and} \\ (-2)^3=-2-2-2=(-\cdot-\cdot-)(2\cdot2\cdot2)=-8 \end{gathered}[/tex]
