Question

Find the difference (3n^3-2n+7) - ( n^2-2n+8)

Answer 1

The difference between the two expressions is;

`3n^3-n^2-1`

Here, we want to find the difference between the given expressions

To do this, we open up the right expression; afterwards, we bring similar terms together

Mathematically, we have this as follows;

`\begin{gathered} (3n^3-2n+7)-(n^2-2n+8) \\ =3n^3-2n+7-n^2+2n-8 \\ =3n^3-2n+2n-n^2+7-8 \\ =3n^3-n^2-1 \end{gathered}`