Expressions with brackets that include surds, for example \(\sqrt{11}(2-\sqrt{3})\), can be multiplied out in a similar way to multiplying out algebraic expressions, \(\sqrt{11}(2-\sqrt{3}) ...

One way to do this is to use a grid: The four terms cannot be simplified because each of the surds has a different number inside the square root, and none of the surds can be simplified.