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Which expression represents the factored form of x^2 - 9?
Practice Questions
Q1
Which expression represents the factored form of x^2 - 9?
(x - 3)(x + 3)
(x - 1)(x + 1)
(x - 2)(x + 2)
(x - 4)(x + 4)
Questions & Step-by-Step Solutions
Which expression represents the factored form of x^2 - 9?
Steps
Concepts
Step 1: Recognize that x^2 - 9 is a difference of squares because it can be written as x^2 - 3^2.
Step 2: Use the difference of squares formula, which states that a^2 - b^2 = (a - b)(a + b). Here, a is x and b is 3.
Step 3: Apply the formula: Replace a with x and b with 3 to get (x - 3)(x + 3).
No concepts available.
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