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A. 1/4 B.-1/4 C. 4 D. -4 E.1
- The solution set of x2-x=x(x-1) is
A. {0} B. {0,-1} C. {1,0} D. R E.∅ - The solution set of the quadratic equation 2x2=4x is
A. {0} B. {2} C. {0,2} D. (0,2) E. {(0,2)} - The solution set of the equation 9x2+1=0 is
A. {1/3} B. {-1/3} C. {1/3, -1/3} D.∅ E. None of them - The solution set of x2-6x+5=4 is
A. {(1,5)} B. {2√3+3} C. {3±2√3} D.{3-2√3} E. None of these
7.x2-0.4x+k is a perfect square if k=……….
A. 0.4 B. 0.04 C.-0.04 D.-0.4 E. 0.2 - x2-6x+k=(x+2)2, then
A. k=3,a=-3 B. k=9,a=3 C. k=-9,a=-3 D. k=9,a=-3 E. k=3,a=9 - x2+8x+10+k is a perfect square if k=………..
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
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