If one side of a square notebook measures 20 cm, what is the area of the front cover of the notebook? 40 cm2 80 cm2 200 cm2 400 cm2

Add them all together then u will get your answer

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,