if k is an integer and 121 < k ^ 2 < 225 , then k can have at most how many values ?
given k is an integer 121 < k ^ 2 < 225 11 < | k | < 15 k = - 12 , - 13 , - 1412 , 1314 answer : d
multiply(subtract(subtract(sqrt(225), sqrt(121)), const_1), const_2)