## WeBWorK Main Forum

### Issue with the Limited Polynomial Context

by Rick Lynch -
Number of replies: 1

Hi Everyone! I believe I have run into an issue with the limited polynomial context in that it accepts answers of the form "constant - (term with variables) + constant" even though there are two constant terms. Can anyone confirm that they also have this issue, and if there is any hope to fixing it? I've included a screenshot of what is going on and the corresponding example code below. Thanks in advance!

DOCUMENT();

"PGstandard.pl",
"MathObjects.pl",
"PGML.pl",
"contextLimitedPolynomial.pl",
);

Context("LimitedPolynomial-Strict");
$ans = Compute("-x + 2")->reduce; BEGIN_PGML The correct answer is [-x + 2]. Enter [-2 - x + 4 = ] [__]{$ans}. This answer is accepted, but it shouldn't be.

Enter [-2 + 4 - x = ] [__]{$ans}. However this doesn't work, which is what should happen. Enter [-x - 2 + 4 = ] [__]{$ans}. Neither does this, but has a different error message.

END_PGML

ENDDOCUMENT();