Question

Which of the to following term should be added to Perfect square(x^4+9)​

Answer 1

Answer:

idk fill the question fully

Answer 2

Answer:

x2 + 64 = (x2)2 + 82 – 2 x (x2) x 8

= (x2 – 8)2

2 x (x2) x 8 must be added