Surds

What is Surds?

1.

In mathematics, we often arrive at answers that contain root signs (they may be square roots, cube roots, etc.).

We will find that some of these numbers with a root sign are easy to deal with since they have an exact decimal representation

For instance sqrt16 = 4, rt^3(8)= = 2, sqrt11.56 = 3.4, rt^5(1/32) = 0.5.

This is because each of these numbers is rational

Expressions with root signs involving pirrational numbers] such as sqrt7 - 2 or rt^3(5) are called surds.
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