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Sensorimotor StageThere is a lack of object permanence; for example, if one played a game of peek-a-boo with a ten-month old baby, they would believe the person actually disappeared. Preoperational StageI...

The core difference between Marx’s and Weber’s class structures is the amount of factors involved in the definition of ‘class,’ which influences the capacity to reach the idea of class consciousness. In M...

One major consequence of deforestation is loss of biodiversity due to habitat destruction. Habitat destruction affects individual species, as well as the environment as whole. For example, the popular dem...

The American Civil War had a major impact in American economy; while the North flourished, the South was left in ruins. The South, an agriculutural society, lost its ability to exploit profitable slave la...

To expand, you would multiply each term in the first bracket set by each term of the second bracket set. Thus, your expansion would mean:3a^2 -6ab + ab -2b^2
To simplify, note that there are two 'ab'...