Factor the polynomial:: -5a^7 (a+2) (a-2).

If we take

, then

, and we can write the above integral as

and undoing the substitution, we end up with
Answer:
8
Step-by-step explanation:
Given the expression
4t^6-r^10 we are to factorize in the form;
(2t^x+r^y)(2t^x-r^y)
First we need to factorize (2t^x+r^y)(2t^x-r^y)

Compare 

Get y;

Hence the sum of x and y is 8
The answer would be 12oz since there is 4 bottles of 3oz perfume and all together that would add too 12oz.