117 x 217 + 83 x 83=?  Pick one: A) 79698 B) 20578 C) 80698 D) 81268 E) None of them
=(117)^2 + (83)^2   =(100+17)^2 + (100-17)^2   =2[(100)^2+(17)^2]   =2[10000+289]   =2 x 10289 = 20578   Answer is 20578
<result>B</result>
117 x 217 + 83 x 83=?