Answer:

Step-by-step explanation:
Use the FOIL method of multiplying binomials.
First term in each binomial: 
Outside terms: 
Inside terms: 
Last term in each binomial: 
Now, rearrange the terms correctly. 
This is our final answer, since it can not be simplified any more.
A^2+b^2=c^2
24^2+b^2=26^2
576+b^2=676
-576. -576
b^2=100
Answer:
{1, 5}
Step-by-step explanation:
the union is all the values in both sets. The only shared numbers in these two sets are 1, and 5. therefore, the union of the sets is {1, 5}
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