import math
x1 = int(input("Enter first number:"))
x2 = int(input("Enter second number:"))
print(" x", "   y")
for x in range(x1, x2):
    formula = math.sqrt(x * x + 3 * x - 500)
    if formula < 0:
        print("square root cant be negative")
    print(x, round(formula, 2))

x   y
15 ***
16 ***
17 ***
18 ***
19 ***
20 ***
21 2.00
22 7.07
23 9.90
24 12.17
25 14.14