42.20 km + 12.82 km =
55.00 km
55.07 km
55.05 km
55.02 km
42.20 km + 12.82 km = 55.02 km
Let (1+x+x2)2014=a0+a1x+a2x2+a3x3+....+a4028x4028 and letA=a0−a3+a6−......+a4026,B=a1−a4+a7−......−a4027,C=a2−a5+a8−......+a4028Then
AA
×A A––––––––––––
+AA×––––––––––
ABA–––––––––––