Which expression is a factor of x^2 +2x-15
a. (x+3)
b. (x+15)
c. (x-5)
d. (x-3)
To factor, we need to find 2 numbers that add to 2 and multiply to -15. 5 seems like it could fit with -3 to match the requirements. Ima go wtih d here.
+633 
