Hi there! The answer is 13gh
To find our answer we need to write the monomials as multipliers:
26gh = 2 * 13 * g * h
13g^2h^6 = 13 * g * g * h * h * h * h * h * h
Now we can see that the terms that are in common are 13, g and h and therefore the GCF is 13gh
