input: Write a function to create a dictionary that contains data in the form of [x:x^2] where x is the key and x^2 is the value. The function should take a list of numbers as input and return the dictionary.
  assert create_dict_squared([1, 2, 3, 4, 5])=={1: 1, 2: 4, 3: 9, 4: 16, 5: 25}
  assert create_dict_squared([0, 5, 10])=={0: 0, 5: 25, 10: 100}
  assert create_dict_squared([])=={}
  assert create_dict_squared([-1, -2, -3])=={-1: 1, -2: 4, -3: 9}
  assert create_dict_squared([1])=={1: 1}
output: def create_dict_squared(numbers):
      return {x: x**2 for x in numbers}