यदि (f(x)=x-2+4x) और (g(x)=3x-5) हों, तो ((f-g)(x)) ज्ञात कीजिए।

If (f(x)=x-2+4x) and (g(x)=3x-5), find ((f-g)(x)).

Explanation opens after your attempt
Correct Answer

A. \(x^2+x+5\)

Step 1

Concept

((f-g)(x)=f(x)-g(x)), hence (x-2+4x-(3x-5)=x-2+x+5). While subtracting, change the signs inside the bracket.

Step 2

Why this answer is correct

The correct answer is A. \(x^2+x+5\). ((f-g)(x)=f(x)-g(x)), hence (x-2+4x-(3x-5)=x-2+x+5). While subtracting, change the signs inside the bracket.

Step 3

Exam Tip

((f-g)(x)=f(x)-g(x)), अतः (x-2+4x-(3x-5)=x-2+x+5)। घटाते समय bracket का sign बदलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=x-2+4x) और (g(x)=3x-5) हों, तो ((f-g)(x)) ज्ञात कीजिए। / If (f(x)=x-2+4x) and (g(x)=3x-5), find ((f-g)(x)).

Correct Answer: A. \(x^2+x+5\). Explanation: ((f-g)(x)=f(x)-g(x)), अतः (x-2+4x-(3x-5)=x-2+x+5)। घटाते समय bracket का sign बदलता है। / ((f-g)(x)=f(x)-g(x)), hence (x-2+4x-(3x-5)=x-2+x+5). While subtracting, change the signs inside the bracket.

Which concept should I revise for this Mathematics MCQ?

((f-g)(x)=f(x)-g(x)), hence (x-2+4x-(3x-5)=x-2+x+5). While subtracting, change the signs inside the bracket.

What exam hint can help solve this Mathematics question?

((f-g)(x)=f(x)-g(x)), अतः (x-2+4x-(3x-5)=x-2+x+5)। घटाते समय bracket का sign बदलता है।