Simplify. (if its already in simplest form, enter given expression)

x^2−16/ = (x+4)(x−4)/
a(x+4)−b(x+4) a(x+4)-b(x+4)

Please helpe

Question

Simplify. (if its already in simplest form, enter given expression) 

x^2−16/                =           (x+4)(x−4)/
a(x+4)−b(x+4)                 a(x+4)-b(x+4)

Please helpe

anonymous · Answer

thought the answer would be (x+4)(x-4)/a-b
 (but you cannot simplify the denominator since it has the minus/subtraction symbol correct? if you could help me understand the rule greatly appreciate it )

anonymous · Answer

(x+4)(x-4)/(a-b)(x+4)=(x-4)/(a-b)

anonymous · Answer

in denominator (x+4) is common so we can write (x+4)(a-b)

anonymous · Answer

then (x+4) in numerator is divided by (x+4) in denominator = 1 does not affect our solution