Evaluating polynomials

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Examples

Lessons

  1. Evaluating polynomials
    1. When 4x23 { 4x^2-3 } is evaluated for x=5, {x=5,} what is the result?
    2. Find the value of "x43x3 {-x^4-3x^3} " when x=3 {x=-3}
  2. Find the value of the following polynomials, given a=2a = 2 and b=5b = 5.
    1. 12a33b\frac{1}{2}a^3-3b
    2. 3ab+5b210a 3ab+5b^2-10a
    3. a2b23aba^2b^2-3ab

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Topic Basics
The unknowns in the polynomials actually represent numbers. What do we do when we know these numbers and plug them into the polynomials? Let's practice here in this section.