Question: a) Write down the binomial expansion of (1 + x) 5 . b) Use your answer to (a) to express (1 2) 5 in the

a) Write down the binomial expansion of (1 + x)5.

b) Use your answer to (a) to express
(1 −√2)5 in the form p + q√2 where p and q are integers.

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