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diff --git a/w15-quadraticequations/set15-quadraticequations-lecture.xopp b/w15-quadraticequations/set15-quadraticequations-lecture.xopp Binary files differnew file mode 100644 index 0000000..c42638e --- /dev/null +++ b/w15-quadraticequations/set15-quadraticequations-lecture.xopp |