It on you need to get the base with the Primal Grow Pro lowest exponent so base the to an attic put it on Lois is food in I this is raised to so we need to get to and then some business free so basically we have here raised to among a repo I call it we're adding into the visa to that's why the GCF is equal to raise to times raise to import again he knew Haku not a new base Meryl always exponents so that's why L time to raise to times raise to and then simplifying that will give us that's our GCF okay then.