Respuesta :

9x²- 25


3x(3x) = 9x²
3x(5) = 15x
-5(3x) = -15x
-5(5) = -25
9x² + 15x - 15x - 25
9x² - 25 is your answer

hope this helps
The answer would be 9x to the power of 2 - 25 because u multiply 3 and 3 and 5 and 5