# Buzz: Product Feedback

## Match Expression 1x vs x

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Feature idea (LEVEL 1)

I'm using variables to write expression for my algebra students to factor. I'm having the issue that if the answer has a coefficient of 1 (i.e. 2x^2 + x - 1) Buzz marks the answer wrong unless the students type 1x. I can't think of a situation where I would want the kids to write the coefficient of 1. At first this seems like a difference between Match Expression vs Equivalent Expression. Buzz can do some equivalent answers using match. For example, if an answer is (x + 2)(x - 1) Buzz will also count (x - 1)(x + 2) correct. I would really appreciate it if you could get Buzz to accept x as well as 1x.

Here is the code for my question:

Type: F

Options: Match

Score: 1, Partial

Var: GCF = 2..5

Var: a = 2..4

Var: b = 1..3

Var: c = 1..5

12) Completely factor: `\$eval(\$GCF\$*\$a\$,#)x^4 + \$eval(\$GCF\$*\$b\$,#)x^3 - \$eval(\$GCF\$*\$c\$,#)x^2`

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1. \$GCF\$x^2(\$a\$x^2 + \$b\$x - \$c\$)

\$GCF\$x(\$a\$x^3 + \$b\$x^2 - \$c\$x)

\$GCF\$(\$a\$x^4 + \$b\$x^3 - \$c\$x^2)

x^2(eval(\$GCF\$*\$a\$)x^2 + eval(\$GCF\$*\$b\$)x - eval(\$GCF\$*\$c\$))

x(eval(\$GCF\$*\$a\$)x^3 + eval(\$GCF\$*\$b\$)x^2 - eval(\$GCF\$*\$c\$)x)

% 1|0.5|0.5|0.5|0.5