Chapter R.1, Problem 3PR

For Exercises 1 and 2, let A={1,2,3,4,5},B={2,4,6,8,10},andC={2,3,5,7,11}. Find (AB)(AC)

If a=p2q2,b=2pq and c=p2+q2, show that c2=a2+b2.

Refer to this figure. Using the given values, find the values of x. a. If d=9 and e=12 , find x. b. If d=3 and e=4 , find x.