If x ¤ y = (x + y)^2 - (x - y)^2. Then √2 ¤ √2 =  Choose the most appropriate option:	A) 0	B) 8	C) 10	D) 15	E) 20
X = √2 and Y also =√2   Applying the function (√2+√2)^2 - (√2-√2)^2 = (2√2)^2 - 0 = 4 x 2 = 8.   Note: Alternative Approach is the entire function is represented as X^2 - Y^2 = (X+Y)(X-Y) which can be simplified as (x+y+x-y)(x+y-(x-y)) = (2x)(2y)=4xy. Substituting x=√2 and y = √2 you get the answer 8.   Answer 8
<result>B</result>
If x ¤ y = (x + y)^2 - (x - y)^2. Then √2 ¤ √2 =