Question

How do we express one-half of the difference of a number cubed and one?

Answer 1

Answer:

1/2(x^3 - 1) or we could write it as (x^3 - 1) / 2.

Step-by-step explanation:

A number cubed is x^3. Difference of this and 1 is x^3 - 1.

Finall we have 1/2 of this:

= 1/2(x^3 - 1) or we could write it as (x^3 - 1) / 2.

Answer 2

Answer:

$\frac{x^3-1}{2}$

Step-by-step explanation:

We must follow what the statement asks us, starting from the last thing and going forward from there.

A number cubed: $x^3$

The difference of a number cubed and one: $x^3-1$

And finally:

one-half of the difference of a number cubed and one, this would be one half of the expression we already found:

$\frac{x^3-1}{2}$