diff --git a/w16-quadratic-2/quadratic-2-lecture.xopp b/w16-quadratic-2/quadratic-2-lecture.xopp
index 8ad4d1c..3282b07 100644
Binary files a/w16-quadratic-2/quadratic-2-lecture.xopp and b/w16-quadratic-2/quadratic-2-lecture.xopp differ
diff --git a/w16-quadratic-2/quadratic-2-notes.pdf b/w16-quadratic-2/quadratic-2-notes.pdf
index 7367163..d0da6f1 100644
Binary files a/w16-quadratic-2/quadratic-2-notes.pdf and b/w16-quadratic-2/quadratic-2-notes.pdf differ
diff --git a/w16-quadratic-2/quadratic-2-notes.xopp b/w16-quadratic-2/quadratic-2-notes.xopp
index e04860d..210bbbf 100644
Binary files a/w16-quadratic-2/quadratic-2-notes.xopp and b/w16-quadratic-2/quadratic-2-notes.xopp differ
diff --git a/w16-quadratic-2/quadratic-2-solutions.pdf b/w16-quadratic-2/quadratic-2-solutions.pdf
index 7ecf522..d5398a0 100644
Binary files a/w16-quadratic-2/quadratic-2-solutions.pdf and b/w16-quadratic-2/quadratic-2-solutions.pdf differ