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> > Problem: > If $\det \mathbf{A} = 2$ and $\det \mathbf{B} = 12,$ then find $\det (\mathbf{A \mathbf{B}).$

Is that supposed to be missing a "}" after the last "A"?

Possible. I pasted the output, but tried to get some paragraph spacing in the output, possible I accidentally deleted a character.