You can only add/subtract like terms so:
2a+ab+2b+4a^2-3ab+9
2a-2ab+2b+4a^2+9 (the only like terms were ab and -3ab)
1/2 because the baker has 4 cups of strawberries after they make the cheesecake and the 4 cups divided between the 8 batches would equal 1/2 cup of strawberries in each batch
Answer:
final displacement = - 3cm +5cm = + 2 cm
ie 2 cm towards right