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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
A.{(2,5)} B.{(5,2)} C. {5,2} D.{(2,5),(5,2)} E. None of these
14.The solution set of the system of equation x-y=0,x2+y2=8 is
A.{(2,-2),(-2,2)} B.{(-2,2),(2,-2)} C.{(2,2),(-2,-2)} D.{(2,5),(5,2)} E. None of these - The root of standard quadratic equation is real if
- b2-4ac<0 2. b2-4ac=0 3. b2-4ac>0
A. 1 only B. 2 only C. 3 only D. 1 and 2 only E.2 and 3 only
. 3 B. 4 C.5 D. 6 E.8
- b2-4ac<0 2. b2-4ac=0 3. b2-4ac>0
- If a:b=3:8 and b:c=4:5, then a:c=…………..
A. 5:11 B. 3:8 C. 3:11 D. 3:10 E. 5:8 - If a:b=3:5 and b:c=3:5, then a:b:c=………
A. 2:3:5 B.3:5:7 C.6:10:15 D. 9:15:25 E.9:20:27 - If a:b = 5:3 , then 3a+ 4b: 4a+3b is
A. 27:36 B. 29:27 C. 27:29 D. 26:29 E. 17:19
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