## Algebra: A Combined Approach (4th Edition)

The simplified form of $\frac{10-20\sqrt 3}{2}$ is $5-10\sqrt 3$.
$\frac{10-20\sqrt 3}{2}$ Step 1: A common factor of 10 and 20 is 2. Hence, 10 and 20 can be divided by 2 and 2 can be taken outside the bracket: $\frac{2(5-10\sqrt 3)}{2}$. Step 2: 2 can be cancelled from both numerator and denominator and we will be left with $5-10\sqrt 3$.