(3/4 - 1/16t^7)^2 = (3/4 - 1/16t^7)(3/4 - 1/16t^7= 9/16 - 3/16t^7 - 3/16t^7 + 1/256t^1= 9/16 - 3/8t^7 + 1/256t^14
(3/4 - 1/16t^7)^2 = (3/4 - 1/16t^7)(3/4 - 1/16t^7
= 9/16 - 3/16t^7 - 3/16t^7 + 1/256t^1
= 9/16 - 3/8t^7 + 1/256t^14