Pls help with qn 4. Given that the coefficient of the x term in the binomial exp

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secondary 3 A Maths

Pls help with qn 4. Given that the coefficient of the x term in the binomial expansion of
(x² + k/8)^8 is 1792, find the value of of the constant k.

Date Posted: 7 years ago

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Date Posted: 7 years ago

Madhu

7 years ago

Thanks! Can I know why 16-3r=1? :)

Tham KY

7 years ago

Because the question gave you the x term, this x term has power 1. So we use the indices in x from T(r+1) to find which r gives us x power 1!

Madhu

7 years ago

Ohh okay thanks!