How to solve
Evaluating a function means replacing every input placeholder with a concrete number and simplifying. For polynomials, respect powers before multiplication and addition so each term is computed correctly before combining.
Steps
- Substitute the given x into every occurrence in the formula.
- Compute powers first, then products, then sums.
- Combine to a single number.
Example
If f(x) = 2x² − 3x + 1, find f(3).
- f(3) = 2(3)² − 3(3) + 1.
- 2 · 9 − 9 + 1 = 18 − 9 + 1 = 10.
Answer: 10
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