यदि (f(x)=x-2+2x) और (g(x)=x-2-2x) हैं, तो ((f+g)(3)) क्या है?
If (f(x)=x-2+2x) and (g(x)=x-2-2x), what is ((f+g)(3))?
Explanation opens after your attempt
A. (18)
Concept
((f+g)(x)=2x-2), hence ((f+g)(3)=2\cdot 32=18). Opposite terms may cancel, so simplify first.
Why this answer is correct
The correct answer is A. (18). ((f+g)(x)=2x-2), hence ((f+g)(3)=2\cdot 32=18). Opposite terms may cancel, so simplify first.
Exam Tip
((f+g)(x)=2x-2), अतः ((f+g)(3)=2\cdot 32=18)। विरोधी पद कट सकते हैं, इसलिए सरल रूप देखें।
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