Context for 2(a)Find the expansion of each of the following expressions, in ascending powers of x, up to and including the term in x2.
2(a)(i)Binomial ExpansionEasy2 marks(1+2x)5AnswerTypeWriteMath0 wordsGrade answerSolutionGrading criteria
2(b)Binomial ExpansionMedium2 marksHence, find the coefficient of x2 in the expansion of (1+2x)5(3+x2)6.AnswerGrade answerSolutionGrading criteria