2 square root 3(square root of 7- square root of 3)

To simplify the expression, we'll start by distributing the 2 to the terms inside the parentheses.

2(square root of 3)(square root of 7 - square root of 3)

Next, consider the product of two square roots. The square root of a number can be written as the number raised to the power of (1/2). So, we have:

2 * (3^(1/2)) * ((7^(1/2)) - (3^(1/2)))

Simplifying further, we can rewrite the expression as:

2 * √3 * (√7 - √3)

Now let's multiply the terms inside the parentheses using the distributive property:

2 * √3 * √7 - 2 * √3 * √3

Simplifying the second term:

2 * √3 * √7 - 2 * 3

2 * √3 * √7 - 6

Finally, multiplying the remaining terms:

2√21 - 6

Therefore, the simplified expression is 2√21 - 6.