If `1/2+1/x=2,` then `x=` `2/5` (b) `5/2` (c) `3/2` (d) `2/3`

If 1/2+1/x=2, then x= (a) 2/5 (b) 5/2 (c) 3/2 (d) 2/3

If x=5+2sqrt(6), then sqrt((x)/(2))-(1)/(sqrt(2x))= (a) 1 (b) 2 (c) 3 (d) 4

If the point P(x ,\ y) is equidistant from A(5,\ 1) and B(-1,\ 5) , then (a) 5x=y (b) x=5y (c) 3x=2y (d) 2x=3y

If "x=sqrt(5)+2",then "x-(1)/(x)" equals: (a) "4," (b) "3," (c) "2," (d) "1"

2^x-2^y=2^(x+y) find dy/dx if x=y=2 (a) 3/5 (b) -3/5 (c) 2/5 (d) 1

The curvature of the function f(x)=x^(2)+2x+1 at x=0 is (a) (2)/(5^("3/2")) (b) (2)/(5^("1/2")) (c) 2/5 (d) (2)/(5^("-3/2"))

Let A=[1 2 3-5] and B=[1 0 0 2] and X be a matrix such that A=B X , then X is equal to 1/2[2 4 3-5] (b) 1/2[-2 4 3 5] (c) [2 4 3-5] (d) none of these

If ( x- 3 )/5 - 2 = -1 , then x is equal to ( a ) 8 ( b) 3 ( c ) -7 ( d ) 2

If x+2 is a factor of x^2+a x+2b and a+b=4 , then (a) a=1,\ b=3 (b) a=3,\ b=1 (c) a=-1,\ b=5 (d) a=5,\ b=-1

If x+2 is a factor of x^2+a x+2b and a+b=4 , then (a) a=1, b=3 (b) a=3, b=1 (c) a=-1, b=5 (d) a=5, b=-1