refactoring: Made the multiplyRoots function use the already implemented function for calculating square roots

src/main/py/calculations_with_roots.py

@@ -1,6 +1,6 @@
-import math
+from src.main.py.logarithmic_and_expo_and_root_calculations import sqrt
 
 def multiplyRoots(first_number, second_number):
     if first_number < 0 or second_number < 0:
         return -1
-    return math.sqrt(first_number * second_number)
+    return sqrt(first_number * second_number)