Literally 0% chance. Especially on the Eminem. Eminem always even if he did sign in public (rare) keeps his signature very neat. Much like the other one you showed me. He did sign for a short period saying slim shady. But most the time like the other one you showed me. Even his rushed ones aren't like that. The flow even if it was a bad one by Eminem is completely off. Same for dre unfortunately. Having both signed as well is an extremely rare item and brings in big money. But unfortunately these are two bad forgery attempts. Sorry to give the bad news! But at least you still have at least 1 guaranteed authentic Eminem autograph.