Question

Which should be added x^4 +64 to make a perfect square

Answer 1

Step-by-step explanation:

x^4 + 64

Converting it into the formula: (a + b)2

= (x^2)^2 + 2(x^2)(8) + (8)^2

= (x^2 + 8)^2

Therefore, 16x^2 must be added to make x^4 + 64 a perfect square.