Yomom45689422 Yomom45689422

03-09-2020
Mathematics

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Use Pascal’s Triangle to determine the fifth term of the expansion of (x + 3)7

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ChoiSungHyun ChoiSungHyun

03-09-2020

Answer:

2835x^5.

Step-by-step explanation:

By Binomial Theorem, T(r+1) = nCr * a^(r+1) * b^r.

Term 5 = 7C4 * x^5 * 3^4

= 35 * x^5 * 3^4

= 2835x^5.

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