यदि (f(x)=x-2) और (g(x)=x+2) हों, तो ((fg)(x)+4) किसके बराबर है?
If (f(x)=x-2) and (g(x)=x+2), what is ((fg)(x)+4) equal to?
Explanation opens after your attempt
A. \(x^2\)
Concept
((fg)(x)=(x-2)(x+2)=x-2-4), so ((fg)(x)+4=x-2). Use the difference of squares identity.
Why this answer is correct
The correct answer is A. \(x^2\). ((fg)(x)=(x-2)(x+2)=x-2-4), so ((fg)(x)+4=x-2). Use the difference of squares identity.
Exam Tip
((fg)(x)=(x-2)(x+2)=x-2-4), इसलिए ((fg)(x)+4=x-2)। difference of squares का उपयोग करें।
Login to save your score, XP, coins and progress.
