# How to write square root in Python?

In Python, you can write the square root of a number using the `sqrt()` function from the built-in `math` module. Here’s an example:

```import math

x = 16
y = math.sqrt(x)
print(y)
```

Output:

```4.0
```

In this example, we first import the `math` module using the `import` statement. Then we define a variable `x` and set it equal to the number whose square root we want to find. We use the `sqrt()` function from the `math` module to calculate the square root of `x`, and store the result in the variable `y`. Finally, we use the `print()` function to display the value of `y`.

### Using math.pow() function:

Yes, you can also use the `math.pow()` function to calculate the square root of a number in Python. The square root of a number `x` can be calculated as `math.pow(x, 0.5)`. Here’s an example:

```import math

x = 16
y = math.pow(x, 0.5)
print(y)
```

Output:

```4.0
```

In this example, we again import the `math` module using the `import` statement. Then we define a variable `x` and set it equal to the number whose square root we want to find. We use the `math.pow()` function with arguments `x` and `0.5` to calculate the square root of `x`, and store the result in the variable `y`. Finally, we use the `print()` function to display the value of `y`.

### Using ** Operator:

Yes, you can also use the `**` operator to calculate the square root of a number in Python. The square root of a number `x` can be calculated as `x**0.5`. Here’s an example:

```x = 16
y = x**0.5
print(y)
```

Output:

```4.0
```

In this example, we define a variable `x` and set it equal to the number whose square root we want to find. We use the `**` operator with arguments `x` and `0.5` to calculate the square root of `x`, and store the result in the variable `y`. Finally, we use the `print()` function to display the value of `y`.