यदि (f(x)=x-3) और (g(x)=x) हों, तो ((f-g)(x)) किस रूप में लिखा जा सकता है?
If (f(x)=x-3) and (g(x)=x), how can ((f-g)(x)) be written?
Explanation opens after your attempt
A. (x(x-1)(x+1))
Concept
((f-g)(x)=x-3-x=x\(x^2-1\)=x(x-1)(x+1)). Use the difference of squares identity.
Why this answer is correct
The correct answer is A. (x(x-1)(x+1)). ((f-g)(x)=x-3-x=x\(x^2-1\)=x(x-1)(x+1)). Use the difference of squares identity.
Exam Tip
((f-g)(x)=x-3-x=x\(x^2-1\)=x(x-1)(x+1))। अंतर वर्ग पहचान का उपयोग करें।
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