What is the expression in factored form? Please explain how you found this factored form.
4x^2 - 9
The expression 4x^2 - 9 can be factored using the difference of squares formula.
The difference of squares formula states that a^2 - b^2 can be factored as (a + b)(a - b).
In the given expression, 4x^2 - 9, we can see that 4x^2 is the square of (2x) and 9 is the square of (3). Therefore, we can write the expression as:
(2x + 3)(2x - 3)
This is the factored form of 4x^2 - 9.