Evaluating polynomials

Lessons

1. Evaluating polynomials
   
   1. When ${ 4x^2-3 }$ is evaluated for ${x=5,}$ what is the result?
      
   2. Find the value of "${-x^4-3x^3}$" when ${x=-3}$
2. Find the value of the following polynomials, given $a = 2$ and $b = 5$.
   1. $\frac{1}{2}a^3-3b$
   2. $3ab+5b^2-10a$
   3. $a^2b^2-3ab$