QUESTION:
If f(x,y) = 3x + 2y and g(x,y) = x2 – y2 for all real numbers of x and y, then f(g(1,2)3) = ?
OPTIONS:
- -8
- -3
- 9
- 6
CORRECT ANSWER:
-3
EXPLANATION:
F(g(1,2)3) = 3(1-4) + 2(3) = -3
If f(x,y) = 3x + 2y and g(x,y) = x2 – y2 for all real numbers of x and y, then f(g(1,2)3) = ?
-3
F(g(1,2)3) = 3(1-4) + 2(3) = -3