1. If x ¤ y = (x + y)² - (x - y)²
Then √5 ¤ √5 =
A. 0
B. 5
C. 10
D. 15
E. 20
2. Which of the following describes the relationship between A and B as shown in the pairs of numbers in the table above?
A. B = A + 4
B. B = 2A + 1
C. B = 3A - 1
D. B = A² + 1
E. B = A² - 1