यदि (f(x)=x-2) और (g(x)=x+1) हैं, तो ((f+g)(x)=(fg)(x)) के वास्तविक हल क्या हैं?
If (f(x)=x-2) and (g(x)=x+1), what are the real solutions of ((f+g)(x)=(fg)(x))?
Explanation opens after your attempt
Correct Answer
A. (x=-1,1)
Concept
From (x-2+x+1=x-2(x+1)), the equation is \(x^3-x-1=0\). The listed integer pairs are not exact solutions.
Why this answer is correct
The correct answer is A. (x=-1,1). From (x-2+x+1=x-2(x+1)), the equation is \(x^3-x-1=0\). The listed integer pairs are not exact solutions.
Exam Tip
(x-2+x+1=x-2(x+1)) से \(x^3-x-1=0\) नहीं, सही समीकरण \(x^2+x+1=x^3+x^2\) है। इसे जाँचने पर दिए विकल्प सही नहीं हैं।
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