I need help understanding algebra
a^2 -b^2 = (a+b) (a-b)
So the equation x^4 -16 can be written as (x^2+4) (x^2-4)
Again (x^2-4) can be written as (x+2) (x-2)
so x^4 -16 = (x^2+4) (x+2) (x-2)
Please let me know if you have any other questions and best me if you are satisfactory.
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