Let R is the set of real number, such that the function f : R → R and g : R → R are defined by f(x) = x 2 + 3x + 1 and g(x) = 2x – 3. Find (fog):

CA Foundation · Quantitative Aptitude · MTP · January 2026
Let R is the set of real number, such that the function f : R → R and g : R → R are defined by f(x) = x 2 + 3x + 1 and g(x) = 2x – 3. Find (fog):
(A) A. 4x 2 + 6x + 1
(B) B. x 2 + 6x + 1
(C) C. 4x 2 -6x + 1
(D) D. x 2 -6x + 1

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. 4x 2 -6x + 1

Topics: Part-A: Business Mathematics

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