यदि (f(x)=3x-2) और (g(x)=2x+1) हों, तो ((f+2g)(x)) क्या है?
If (f(x)=3x-2) and (g(x)=2x+1), what is ((f+2g)(x))?
Explanation opens after your attempt
A. \(3x^2+4x+2\)
Concept
((f+2g)(x)=f(x)+2g(x)=3x-2+2(2x+1)). First multiply, then add.
Why this answer is correct
The correct answer is A. \(3x^2+4x+2\). ((f+2g)(x)=f(x)+2g(x)=3x-2+2(2x+1)). First multiply, then add.
Exam Tip
((f+2g)(x)=f(x)+2g(x)=3x-2+2(2x+1))। पहले गुणा करें, फिर जोड़ें।
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