input: Write a function to filter odd numbers and return their squares using list comprehension.
  assert filter_odd_squares([1, 2, 3, 4, 5, 6])==[1, 9, 25]
  assert filter_odd_squares([10, 21, 32, 43, 54, 65])==[441, 1849, 4225]
  assert filter_odd_squares([7, 8, 9, 10, 11, 12])==[49, 81, 121]
output: def filter_odd_squares(numbers):
      return [x**2 for x in numbers if x % 2 != 0]