Answer: -72/35
Step-by-step explanation:
The circumference of any circle is pi times its diameter.
For this circle, that's 9 pi.
Assuming we want to factor the formula to (x+3)(x+3), you want to have a +9 where there is a -4 now. So you must add 13.
24x^3-40x^2. 45x-75
8x^2(3x-5). 15(3x-5)
(8x^2+15)(3x-5)