How to simplify -4 + 4h - (-1+3h-3h^2+h^3)

[morrowcosom]

Homework Statement

-4 + 4h - (-1+3h-3h^2+h^3)

Homework Equations

The Attempt at a Solution

-4 + 4h + (1-3h+3h^2-h^3)
= -3 + h +3h^2 -h^3

I am doing independent study on a computer program and it accepted my unsimplified answer as correct, but not my simplified one. What is wrong with my simplified answer?

 

[LCKurtz]

Homework Statement

-4 + 4h - (-1+3h-3h^2+h^3)

Homework Equations

The Attempt at a Solution

-4 + 4h + (1-3h+3h^2-h^3)
= -3 + h +3h^2 -h^3

I am doing independent study on a computer program and it accepted my unsimplified answer as correct, but not my simplified one. What is wrong with my simplified answer?

Nothing.

 

[statdad]

Is it possible the program "expected" terms to be written in decreasing order?
A similar thing happened to my son on a test for an on-line history class: he selected as an answer "b: hot and dry" in a multiple-choice quiz. It was marked incorrect: the program gave the correct answer as "c: dry and hot".
Poorly-constructed computer assessment packages are next to worthless.