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Hello!
is automatically rational because it can be expressed as a fraction. Another way to find out if it's rational is to convert it to a decimal, then see if the decimal is terminating or repeating.
This decimal is terminating.
:)
This decimal is terminating.
:)
We are given this
write it as the difference of cubes
use the formula for the difference of cubes
Now use the formula for the difference of squares as