यदि (f(x)=|x|+x) और (g(x)=|x|-x) हों, तो ((fg)(x)) का मान क्या होगा?

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

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

((|x|+x)(|x|-x)=|x|2-x-2=0). The identity ((a+b)(a-b)=a-2-b-2) is useful.

Step 2

Why this answer is correct

The correct answer is A. (0). ((|x|+x)(|x|-x)=|x|2-x-2=0). The identity ((a+b)(a-b)=a-2-b-2) is useful.

Step 3

Exam Tip

((|x|+x)(|x|-x)=|x|2-x-2=0)। पहचान ((a+b)(a-b)=a-2-b-2) उपयोगी रहती है।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=|x|+x) और (g(x)=|x|-x) हों, तो ((fg)(x)) का मान क्या होगा? / If (f(x)=|x|+x) and (g(x)=|x|-x), what is ((fg)(x))?

Correct Answer: A. (0). Explanation: ((|x|+x)(|x|-x)=|x|2-x-2=0)। पहचान ((a+b)(a-b)=a-2-b-2) उपयोगी रहती है। / ((|x|+x)(|x|-x)=|x|2-x-2=0). The identity ((a+b)(a-b)=a-2-b-2) is useful.

Which concept should I revise for this Mathematics MCQ?

((|x|+x)(|x|-x)=|x|2-x-2=0). The identity ((a+b)(a-b)=a-2-b-2) is useful.

What exam hint can help solve this Mathematics question?

((|x|+x)(|x|-x)=|x|2-x-2=0)। पहचान ((a+b)(a-b)=a-2-b-2) उपयोगी रहती है।