This is an examination to test your level of skill. By asking this quesiton to others, you do not show your true level and maybe be placed in a higher math than you are able.
factor
remember
if ab=0
assume that a and/or b=0
p^2+13p-30=0
fidn what 2 numbers add to 13 and multiply to -30
15 and -2
(p+15)(p-2)=0
set each to zero
p+15=0
p=-15
p-2=0
p=2
the roots are p=-15 and/or 2