If we want to make 16x & # 178; + 1 a complete square, we should add the following formula

If we want to make 16x & # 178; + 1 a complete square, we should add the following formula

16x & # 178; + 8x + 1
8x quartic power + 16x & # 178; + 1 [the original formula is a square term and a middle term]
16x & # 178; + 1-1
-16x & # 178; [missing this]
16x & # 178; - 8x + 1