math extension 係未好難嫁

我想問math extension 係未好難嫁?如果讀 bio +chem+econ,咁應唔應揀math extension.如果要揀,咁揀M1定M2?其實我math得B,又驚將來太難讀同冇時間溫,咁我應唔應該冒險???其實係未讀唔讀math extension都冇所謂?大約會讀d咩?