Simplify the following 515*515*515-221*221*221/(515*515+515*221+221*221)  Choose the correct choice from the following choices:
A) 294  B) 394  C) 284  D) 274  E) 264
515*515*515-221*221*221/(515*515+515*221*221+221)   =[(515)^3 - (221)^3 ] / [(515)^2 + 515*221 + (221)^2]   if x = 515 &amp; y = 221 then exp is   (x^3 - y^3)/(x^2 + xy + y^2) which is equal to (x-y)   (x^3 - y^3)/(x^2 + xy + y^2)=(x-y)   [(515)^3 - (221)^3 ] / [(515)^2 + 515*221 + (221)^2] = (515-221)= 
<gadget id="calculator">(515-221)</gadget>
<output>294</output>
294   294NSWER:294
<result>A</result>
Simplify the following 515*515*515-221*221*221/(515*515+515*221+221*221)