Question

In an AP of three consecutive terms (x - y)2, (x2 + y), (x + y)2, the common difference is
A] 2x² + 2y²
B) x² + y²
C]2xy
D] - 2xy​

Answer 1

Answer:

x²+y²-(x-y)² = x²+y² - x²+2xy -y² = 2xy

similarly, (x+y)²-(x²+y²) = 2xy

common difference is= 2xy