The value of (2.75)3 - (2.00)3 - (0.75)3 is Pick
A) 12.375
B) 6
C) 9
D) 8
E) 2
Explanation:   (2.75)3 - (2.00)3 - (0.75)3   a^3 + b^3 + c^3 = (a + b + c)(a^3 + b^3 + c^3 - ab - bc - ca)   If a + b + c = 0 then a^3 + b^3 + c^3 = 3abc   Hence 2.75 - 2.00 - 0.75= 
<gadget id="calculator">2.75 - 2.00 - 0.75</gadget>
<output>0</output>
0   So, (2.75)3 - (2.00)3 - (0.75)3= 3 * 2.75 * 2 * 0.75 = 3 * 1.5 * 2.75   = 4.5 * 2.75= 
<gadget id="calculator">4.5 * 2.75</gadget>
<output>12.375</output>
12.375   12.375
<result>A</result>
The value of (2.75)3 - (2.00)3 - (0.75)3 is