If `y=(x+3)^2` , then `(-2x-6)^2` is equal to (a)`-4y^2` (b) `-2y^2` (c) `-4y` (d) `2y` (e) `4y`

If x=2,y=1 then x^(4)+2x^(3)y-2xy^(3)-y^(4) is equal to

If (x)/(y)=(a+2)/(a-2), then (x^(2)-y^(2))/(x^(2)+y^(2)) is equal to (8a)/(a^(2)+4)(b)(4a)/(a^(2)-4)(c)(4)/(a^(2))(d)(4a)/(a^(2)+4)

Let y=y(x) be the solution of the differential equation,x((dy)/(dx))+y=x log_(e)x,(x>1) if 2y(2)=log_(e)4-1, then y(e) is equal to: (a)-((e)/(2))(b)-((e^(2))/(2))(c)(e)/(4)(d)(e^(2))/(4)

If 3x-4y+z=7; 2x-z+3y=19 ; x+2y+2z=24 , then what is the value of z ? (a) 4 (b) 5 (c) 6 (d) 8

The HCF of 4y^(4)x - 9y^(2)x^(3) and 4y^(2)x^(2) + 6yx^(3) is

If x-4y= 0 and x+2y= 24 , then what is the value of (2x+3y)//(2x-3y) ?

Solve for x and y:3x^(2)-5y^(2)=7,3xy-4y^(2)=2

The locus of the image of the point (2,3) in the line (x-2y+3)+lambda(2x-3y+4)=0 is (lambda in R)( a) x^(2)+y^(2)-3x-4y-4=0 (b) 2x^(2)+3y^(2)+2x+4y-7=0(c)x^(2)+y^(2)-2x-4y+4=0(d) none of these

If 2x+y=5 and 3x-4y=2, then the value of 2xy is (a) 4 (b) 6 (c) 8 (d) 10

If 2x+3y=5 and 3x+2y=10 then x-y= (a) 3 (b) 4 (c) 5 (d) 6