यदि (f(x)=9x+28), तो (f(3x)-f(x)) कब (108) होगा?
If (f(x)=9x+28), when will (f(3x)-f(x)) be (108)?
Explanation opens after your attempt
B. (x=6)
Concept
(f(3x)-f(x)=(27x+28)-(9x+28)=18x). From (18x=108), (x=6).
Why this answer is correct
The correct answer is B. (x=6). (f(3x)-f(x)=(27x+28)-(9x+28)=18x). From (18x=108), (x=6).
Exam Tip
(f(3x)-f(x)=(27x+28)-(9x+28)=18x) है। (18x=108) से (x=6) है।
Login to save your score, XP, coins and progress.
