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The most common answer is:

```
import math
fill in this function to return the distance between the two points!
first_point = (1, 1)
second_point = (4, 5)
def distance(first_point, second_point):
Establishes the value of X and Y
x1= first_point[0]
x2= second_point[0]
y1= first_point[1]
y2= second_point[1]
math
power1 = pow(y2 – y1, 2)
power2 = pow(x2 – x1, 2)
return math.sqrt (power1 + power2)
print (distance(first_point, second_point))
```

The function to calculate the distance between two points is almost correct, but there are a few typos in your code, such as the use of quotation marks and subtraction operator. To ensure proper syntax and functionality, let’s correct these issues.

Here’s the revised version:

```
import math
first_point = (1, 1)
second_point = (4, 5)
def distance(first_point, second_point):
# Extract x and y coordinates
x1, y1 = first_point
x2, y2 = second_point
# Calculate the squares of differences in x and y coordinates
power1 = pow(x2 - x1, 2)
power2 = pow(y2 - y1, 2)
# Return the square root of the sum of squares (distance formula)
return math.sqrt(power1 + power2)
print(distance(first_point, second_point))
```

This approach properly calculates the distance between two points in a 2D space by first finding the difference in their x-coordinates and y-coordinates, squaring those differences, adding the squares, and finally taking the square root of the sum.

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