The greatest common factor of each term in the espression is 20x-16xy is 4x . Which choice is the expression written in as a product?

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

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found it xd it ok yt

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3