A book store had 30816 exercise books which were paclced in cartons each carton contained 24 exercise books the mass of an empty carton was 2kg and a full carton 12kg

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Simplify (8x2 − 1 + 2x3) − (7x3 − 3x2 + 1). −5x3 + 11x2 − 2 5x3 − 11x2 + 2 x3 + 2x2 + x3 x3 − 2x2 − x3

Marking brainliest! def undergoes a dilation, with a scale factor of 4, to form d'e'f. side d'e'is 4 times the length of side de. what is the area of d'e'f', compared to the area of def?