added test for division of two roots as well as corresponding functionality

src/main/py/calculations_with_roots.py

@@ -5,6 +5,9 @@ def multiplyRoots(first_number, second_number):
         return -1
     return sqrt(first_number * second_number)
 
+def divideRoots(first_number, second_number):
+    return sqrt(first_number / second_number)
+
 def sqrt_power(base, exponent):
     if base < 0:
         return -1

src/test/py/test_calculations_with_roots.py

@@ -18,6 +18,9 @@ class calculationsWithRoots(unittest.TestCase):
     def test_sqrt_negative_2_times_sqrt_negative_8_should_be_negative_one_for_error(self):
         self.assertEqual(multiplyRoots(-2, -8), -1)
 
+    def test_divide_sqrt_16_by_sqrt_4_should_be_2(self):
+        self.assertEqual(divideRoots(16,4), 2)
+
     def test_sqrt_4_to_power_of_3_should_be_8(self):
         self.assertEqual(sqrt_power(4, 3), 8)