Respuesta :
This is a common form of equation known as a difference of squares, it always factors as follows...
(a^2-b^2)=(a+b)(a-b) in this case:
first let's factor out 4...
4(9x^2-25) now factor the difference of squares...
4(3x+5)(3x-5)
(a^2-b^2)=(a+b)(a-b) in this case:
first let's factor out 4...
4(9x^2-25) now factor the difference of squares...
4(3x+5)(3x-5)