[Amaths Binomial Theorem] Please help with qn 10! If you can't see, this is the

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secondary 3 A Maths

[Amaths Binomial Theorem] Please help with qn 10! If you can't see, this is the qn:

The coefficient of x³ in tbe binomial expansion of (x²-k/x³)^9 is -672. Find the value of k.

Answer stated is k=2 but I need help with working. TIA

Date Posted: 7 years ago

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Date Posted: 7 years ago

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Madhu

7 years ago

thank you :)

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