A. -1 B.6 C.15 D.26 E .None of these
- Which must be added to x2-2x/3 in order to be a perfect square is
A.(4/2)^2 B. (2/3)^2 C. 32 D. (3/4)^2 E.(1/3)^2 - A quadratic equation with roots -3 and 5 is
A.x2-15=0 B. x2-8x-15=0 C.x2+8x-15=0 D. x2+2x-15=0 E. x2-2x-15=0 - A quadratic equation with solution set {1/3,1/4} is
A.12x2=7x+1 B.12x2=7x-1 C.12x2=x+1 D.12x2=x-1 E.12x2=1-x - The solution set of the system of equation x-y=3, x2-y2=21 is