Eric Nicholas K's answer to uwu's Secondary 3 A Maths Singapore question.
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Method 1 is to use general formula.
Method 2, which I will not write here, is plain expansion from the first term all the way until you obtain the a^4 b^4.
Method 2, which I will not write here, is plain expansion from the first term all the way until you obtain the a^4 b^4.
Date Posted:
4 years ago
Thank you! I was kind of doubting if it was term 4 or term 5. Thanks for clearing it up!
It would be the fifth term in this case. In the expansion of (something)^8, there will be a total of 9 terms (powers 0 to 8).
The middle term a^4 times b^4 will be nicely the middle of the 9-term expansion, which will be the fifth term.
The middle term a^4 times b^4 will be nicely the middle of the 9-term expansion, which will be the fifth term.
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