Assuming the numbers immediately after n are the powers (or indices), the answer is 8*n^2.
8n cubed
6(3m - 2n)(3m + 2n)
The GCF is 6.
The GCF is 9.
The GCF is 4.
The GCF is 30.
50
The GCF is: 1
The GCF is 27.
The GCF is 1.
The GCF is 2.
The GCF is 3.