Hi I do not currently have a moodle set up but am trying to understand whether Moodle (with STACK, perhaps) can do what I want.

I've gone through the demo quizzes for STACK. They do not include examples of what I need.

Basically, because I teach lower level Math (middle school), the Algebra we do does NOT like too many multiple answers. For example, a question may be:

Factorize the quadratic expression $$x^2-2x+1$$.

I will only want answers like $$(x-1)^2$$ or $$(1-x)^2$$. I wouldnt want to accept $$x^2-2x+1$$ or $$1-2x+x^2$$.

Is this kind of questions possible with STACK. If not STACK, any other moodle plugin?