What the restrictions on the domain are

See below.

Step-by-step explanation:

p^2 - 6p - 16       p^2 - 9         ( p - 8)( p + 2)      (p + 3)(p - 3)

 +      =    +  

p^2 - 7p - 18          p + 3           (p - 9)( p + 2)           (p + 3)

   p - 8

=     +   (p - 3)     (answer)

   p - 9

2 x t divided by n

step-by-step explanation:

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5