Find value of x
(11^2 + 12^2 + 13^2 + ... + 20^2) = x  Choose the most appropriate option:	A) 1200	B) 1340	C) 1234	D) 1203	E) 2485
(11^2 + 12^2 + 13^2 + ... + 20^2) = (1^2 + 2^2 + 3^2 + ... + 20^2) - (1^2 + 2^2 + 3^2 + ... + 10^2)   6   = 20 x 21 x 41	-	10 x 11 x 21   6	6   = (2870 - 385)= 
<gadget id="calculator">(2870 - 385)</gadget>
<output>2_485</output>
2485   2485
<result>E</result>
Find value of x
(11^2 + 12^2 + 13^2 + ... + 20^2) = x