Unformatted text preview: So: (x)² - (4)² ⇒ (x - 4)(x + 4) One of the misconceptions that people have when determining the nature of polynomial is that a² + b² is factorable. Even though it can be factored in terms of i, it's impossible to factor that expression. Also note that you can factor nonnegative and not perfect terms. E.g. x² - 2 Let: a² = x² a = x b² = 2 b = √2 So: x² - 2 = (x - √2)(x + √2)...
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- Spring '10
- Negative and non-negative numbers, Square number, a=x b²