Question
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B. In the expansion of , what is the:
i. term
ii. coefficient of the term
iii. third term in ascending powers of

Ask by Munoz Carter. in Jamaica
Mar 20,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The term in the expansion of is . The coefficient of the term is , and the third term in ascending powers of is .

Solution

To find the term in the expansion of , we can use the binomial theorem. The binomial theorem states that for any positive integer , the expansion of is given by:
In this case, and . The term in the expansion corresponds to the term where , since the terms are indexed from 0.
Therefore, the term in the expansion of is:
Now, let’s calculate the coefficient of the term in the expansion of . The coefficient of the term corresponds to the term where .
The coefficient of the term is given by:
Finally, to find the third term in ascending powers of , we need to find the term where .
The third term in ascending powers of is given by:
Let’s calculate these values.
Simplify the expression by following steps:
  • step0: Solution:
  • step1: Multiply the terms:
  • step2: Multiply the terms:
  • step3: Multiply the numbers:
  • step4: Multiply the terms:
  • step5: Multiply the numbers:

    Calculate or simplify the expression .
    Simplify the expression by following steps:
  • step0: Solution:
  • step1: Multiply the terms:
  • step2: Multiply the terms:
  • step3: Multiply the numbers:
  • step4: Multiply the terms:
  • step5: Multiply the numbers:

    Calculate or simplify the expression .
    Simplify the expression by following steps:
  • step0: Solution:
  • step1: Multiply the terms:
  • step2: Multiply the terms:
  • step3: Multiply the numbers:
  • step4: Multiply the terms:
  • step5: Multiply the numbers:

    The term in the expansion of is .
The coefficient of the term in the expansion of is .
The third term in ascending powers of is .

Answered by UpStudy AI and reviewed by a Professional Tutor

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Simplify this solution

Extra Insights

To tackle the problem, let’s employ the Binomial Theorem, which states that:
For , we can identify , , and .

Part i: The term

The term in the expansion means that we are looking for a term where because raised to the power 6 will be , and raised to the power gives us .
The term corresponding to is:
Calculating this:
So, the term is:

Part ii: Coefficient of the term

The term implies we are looking for the term where appears, which corresponds to since the exponent of will be .
Thus, we already calculated the term:
The coefficient can be calculated as follows:
This equals:

Part iii: The third term in ascending powers of

The third term corresponds to because we start counting from .
Calculating the third term yields:
Calculating step-by-step:
Thus, the third term is:
In summary:
  • The term is .
  • The coefficient of the term is .
  • The third term in ascending powers of is .

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