Answer :
The answer is 64+8y+y².
In a perfect square trinomial, you can divide the value of b by 2 and square it, and it will equal the value of c. This works in every other trinomial listed except this one:
8/2 = 4; 4²=16≠64.
In a perfect square trinomial, you can divide the value of b by 2 and square it, and it will equal the value of c. This works in every other trinomial listed except this one:
8/2 = 4; 4²=16≠64.