यदि (f(x)=x-2-1) और (g(x)=x-2+1) हों, तो ((fg)(x)) क्या है?

If (f(x)=x-2-1) and (g(x)=x-2+1), what is ((fg)(x))?

Explanation opens after your attempt
Correct Answer

A. \(x^4-1\)

Step 1

Concept

(\(x^2-1\)\(x^2+1\)=x-4-1) by difference of squares. Recognizing the formula makes calculation faster.

Step 2

Why this answer is correct

The correct answer is A. \(x^4-1\). (\(x^2-1\)\(x^2+1\)=x-4-1) by difference of squares. Recognizing the formula makes calculation faster.

Step 3

Exam Tip

(\(x^2-1\)\(x^2+1\)=x-4-1) difference of squares से मिलता है। formula पहचानने से calculation तेज होती है।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=x-2-1) और (g(x)=x-2+1) हों, तो ((fg)(x)) क्या है? / If (f(x)=x-2-1) and (g(x)=x-2+1), what is ((fg)(x))?

Correct Answer: A. \(x^4-1\). Explanation: (\(x^2-1\)\(x^2+1\)=x-4-1) difference of squares से मिलता है। formula पहचानने से calculation तेज होती है। / (\(x^2-1\)\(x^2+1\)=x-4-1) by difference of squares. Recognizing the formula makes calculation faster.

Which concept should I revise for this Mathematics MCQ?

(\(x^2-1\)\(x^2+1\)=x-4-1) by difference of squares. Recognizing the formula makes calculation faster.

What exam hint can help solve this Mathematics question?

(\(x^2-1\)\(x^2+1\)=x-4-1) difference of squares से मिलता है। formula पहचानने से calculation तेज होती है।