Can you help me fill in the charts

(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

the answer to this in exact form is 4/35 but in decimal form its 0.1142857

hope this if needed hmu

it's possible to build a triangle with side lengths of 3, 3, and 9.- true ( b.)