9x^2-25 ?
so lost.
how to factor it
Bobpursley already answered this.
http://www.jiskha.com/display.cgi?id=1447986126
thanks
To simplify the expression 9x^2 - 25, we can factor it 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 this case, 9x^2 can be written as (3x)^2 and 25 can be written as 5^2. Applying the formula, we have:
9x^2 - 25 = (3x + 5)(3x - 5)
So, the simplified expression is (3x + 5)(3x - 5).