Need help with my homework thank you

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap

The longer leg of a 30-60-90 trangle is 18