WILL GIVE BRAINLIEST!!!! PLEASE PLEASE HELP!!!!!!!
Factor completely x3 + 5x2 − 3x − 15.
a. (x − 5)(x2 − 3)
b. (x + 5)(x2 + 3)
c. (x − 5)(x2 + 3)
d. (x + 5)(x2 − 3)