Calculating radicals can be difficult if they don't work out. To calculate a radical that doesn't work out, you can estimate by finding which two perfect square roots it lies between. You can also use a calculator.
An alternative solution, using properties of square roots is where [tex]\sqrt{(a*b)} = \sqrt{a} * \sqrt{b}[/tex]
Using this, we can create [tex]2\sqrt{3}\\=\sqrt{4*3}\\=\sqrt{12}[/tex]. This is between the perfect square 9 and 16 (3 and 4).
