\(x^4-81\) का सही गुणनखंड रूप कौन-सा है?

Which is the correct factorised form of \(x^4-81\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. ((x-3)(x+3)\(x^2+9\))

Step 1

Concept

First (x-4-81=\(x^2-9\)\(x^2+9\)), and \(x^2-9\) factors further. In exams, factor further wherever possible.

Step 2

Why this answer is correct

The correct answer is B. ((x-3)(x+3)\(x^2+9\)). First (x-4-81=\(x^2-9\)\(x^2+9\)), and \(x^2-9\) factors further. In exams, factor further wherever possible.

Step 3

Exam Tip

पहले (x-4-81=\(x^2-9\)\(x^2+9\)) और \(x^2-9\) फिर टूटता है। परीक्षा में जहाँ संभव हो वहाँ आगे भी गुणनखंड करें।

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Mathematics Answer, Explanation and Revision Hints

\(x^4-81\) का सही गुणनखंड रूप कौन-सा है? / Which is the correct factorised form of \(x^4-81\)?

Correct Answer: B. ((x-3)(x+3)\(x^2+9\)). Explanation: पहले (x-4-81=\(x^2-9\)\(x^2+9\)) और \(x^2-9\) फिर टूटता है। परीक्षा में जहाँ संभव हो वहाँ आगे भी गुणनखंड करें। / First (x-4-81=\(x^2-9\)\(x^2+9\)), and \(x^2-9\) factors further. In exams, factor further wherever possible.

Which concept should I revise for this Mathematics MCQ?

First (x-4-81=\(x^2-9\)\(x^2+9\)), and \(x^2-9\) factors further. In exams, factor further wherever possible.

What exam hint can help solve this Mathematics question?

पहले (x-4-81=\(x^2-9\)\(x^2+9\)) और \(x^2-9\) फिर टूटता है। परीक्षा में जहाँ संभव हो वहाँ आगे भी गुणनखंड करें।