How do you factor y2-64?

Answer 1

y2 - 64 can be written as y2 - 82, which is of the form of a2 - b2.

And a2 - b2 is factored as (a-b)(a+b).

Therefore, y2 - 64 is factored as (y+8)(y-8).

Answer 2

(y - 8)(y + 8)