To find two numbers that add to 17 but multiply to 84, we can set up a system of equations. Let's call the two numbers x and y. We have the following equations: x + y = 17 and x * y = 84. By solving these equations simultaneously, we can find that the two numbers are 12 and 5.

Oh, dude, you're hitting me with the math riddles, huh? Alright, so we're looking for two numbers that add up to 17 but multiply to 84. Let me break it down for you - the numbers are 12 and 5. Yeah, it's like magic, but with numbers. You're welcome.