Add
8x4 y4
+
12x4 y4
.

A) 2x2 y2
5
B) 2x4 y4
5
C)
20x2 y2
D) These radicals cannot be added.

Cam bought some used books for $4.95. he paid $0.50 each for some books and $0.35 each for the others. he bought fewer than 8 books at each price. how many books did cam buy?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.