Tìm m để hàm sô y=x³+(m-1)x²-3x-(m²+2) có 2 cực trị thỏa 2 cực trị nằm khác phía trục hoành

Nour and rana are shopping for a christmas tree. they are deciding between 2 22 different types of trees (real and fake) and 4 44 colors for the ornaments (white, silver, gold, and purple). they each created a display to represent the sample space of randomly picking a type of tree and a color for the ornaments. whose display correctly represents the sample space?