Question

4. *—3 - 15 – 91 5. ** –23 - 132 + (-2)21 - 5 6. |116 - 81 – 42 7. V42+32-4 ** 1-4-(-3) 9. Evaluate g(4) if g(x) = -x2 - 4x + 9 8. * Evaluate f(-3) if f(x) = x2 – [x] + 5

Answer 1

4.

$\begin{gathered} -3-|5-9| \\ -3-|-4| \\ \text{ By the symmetry property of the absolute value:} \\ |a|=|-a| \\ so\colon \\ |-4|=4 \\ -3-4=-7 \end{gathered}$