Answer:
C. 9x^2 - 25
Explanation:
We can use the formula for the product of two binomials, which is:
(a + b)(a - b) = a^2 - b^2
where a = 3x and b = 5. Substituting these values, we get:
(3x + 5)(3x - 5) = (3x)^2 - (5)^2
Simplifying further:
(3x)^2 = 9x^2
(5)^2 = 25
Therefore:
(3x + 5)(3x - 5) = 9x^2 - 25
So the answer is C. 9x^2 - 25.
Hope this helps!