Question

Evaluate the following expression using the values given:

Find -a2 - 3b3 + c2 + 2b3 - c2 if a = 3, b = 2, and c = -3.

-67

-17

-31

1

Answer 1

\[-a^2 - 3b^3 + c^2 + 2b^3 - c^2%\\=-(3)^2 - 3(2)^3 + (-3)^2 + 2(2)^3 - (-3)^2
\]
simplify the equation before substituting in the values

Answer 2

\[-a^2 - 3b^3 + c^2 + 2b^3 - c^2\\=-a^2 + 2b^3- 3b^3 + c^2 - c^2\\
=-a^2+(2-3)b^3+(1-1)c^2\\
=\]