Question

In my textbook it states that, "Like radicals have the same radicand and the same index."

Radicand = \(\sqrt{x + 9}\) (x + 9 being the radicand.)
What does it mean by, "index" though?

Answer 1

I think it means the power. Like in this:
\[\LARGE \sqrt[3]{27}\]
The index would be 3.

Answer 2

index is the root. square root has index of 2, cube root has index of 3, fourth root has index of 4 and so on

Answer 3

Picture time:

Answer 4

Luigi thanks :-).