1. Use rules on exponents to perform the indicated operations: a) b) a b a b 51 a b 50 3 2 2 3 4 2 2 3 2 7 2 3 2. Using vertical alignment, find the sum of the following expressions: 2 x 2 3xy y 2 , 2 y 2 3 x 2 xy, x 2 3 xy 3 y 2 . 3. Simplify by removing symbols of grouping and collecting like terms: 8 x 4 x y x 5 y 4. Find the numerical value of the following expression: , for and 3x 2 y 3 2 xy 2 x 1 y 2 5. State the property of real numbers that have been used to make the following equations true: a) b) 4 xy 1 4 xy 97 79 79 97 6. Draw the graph of each of the sets: a) b) y : 3 y 4 7. Insert a) or x : 3 x 4, x , to make each statement correct: 22 7, ,3,14 7 b) 7009, 0, 7 8. Describe a set of natural numbers less than 6 using roster and set builder notation method. 9. Given , and . U 1, 2,3,...,9 A 2, 4, 6,8 B 2,3,5, 7 Find. a) c A UB c b) A I B c