(469 + 174)^2 - (469 - 174)^2 /(469 x 174)= ?  Select
A) 643
B) 2
C) 295
D) 4
E) 185
Given exp. =(a + b)^2 - (a - b)^2/ab   =4ab/ab   = 4 (where a = 469, b = 174.)   Answer is 4.
<result>D</result>
(469 + 174)^2 - (469 - 174)^2 /(469 x 174)= ?