IXL | Solve equations using cube roots

Look at this equation:

What is

the cube root of 8?

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Learn with an example

Look at this equation:

What is

the cube root of 1?

Taking the cube root

(

)

is the inverse of cubing. For example,

125

since

125

A perfect cube is the result when an integer is multiplied by itself, and then multiplied by itself again. For example, 125 is a perfect cube because

125

The cube root of a perfect cube is always an integer.

You want to find the cube root of 1, so figure out which number cubed (multiplied by itself, and then multiplied by itself again) equals 1.

The number 1 cubed equals 1.

In other words, the equation

is true when

So the cube root of 1 is 1.

Looking for more? Try these:

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