ANSWER
[tex]{7x}^{3} - 2 {x}^{2} - 5[/tex]
EXPLANATION
A simplified polynomial is said to be in standard form if it is in descending powers of x.
The polynomial expression is
[tex](6 {x}^{3} + 3 {x}^{2} - 2) + ( {x}^{3} - 5 {x}^{2} - 3)[/tex]
We group similar terms to get;
[tex]6 {x}^{3} + {x}^{3} + 3 {x}^{2} - 5 {x}^{2} - 3 - 2[/tex]
Combine similar terms
[tex]{7x}^{3} - 2 {x}^{2} - 5[/tex]
The polynomial above is in standard form.
