RRB Government Jobs Exams

-x^2 + x - 3 =
A. -(x + 1/2)^2-11/4
B. (x - 1/2)^2-11/4
C. -(x - 1/2)^2-11/4
D. -(x - 1/2)^2+11/4

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RRB Other Question

If f(2x + 3) = 2x - 1, then f(3x + 4) =
A. 6x + 7
B. 3x
C. 6x + 11
D. 9x + 15 How many solutions do the equation (1/x) + {1/(x + 1)} = 1/3 have?
A. 0
B. 1
C. 2
D. 3