The value of (2.502+0.064)^2 - (2.502-0.064)^2/2.502*0.064
Options
A) . 25 B) . 235 C) 4 D) 3 E) 2

Rationale: "( 2.502 + 0.064 ) 2 - ( 2.502 - 0.064 ) 2 / 2.502 * 0.064 = ( a + b ) 2 - ( a - b ) / ab = 4 ab / ab = 4 answer : c"
Answer: C