Quick questions on The binomial theorem: expansions and the general term - SQA Advanced Higher Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is off-by-one with

r

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The term in

b^r

is the

(r+1)

th term; the first term has

r = 0

What is q1?

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Write the coefficients for

(a + b)^4

. [1 mark]

What is q2?

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Find the coefficient of

x^2

(1 + 3x)^5

. [3 marks]

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