[+3x-5),((c)0],[2," If "(x+y)^(3)-(x-y)^(3)-6y(x^(2)-y^(2))=ky^(2)," then "k=]

If (x+y)^3- (x-y)^3-6y (x^2-y^2)= k y^3, then k= (a)1 (b) 2 (c) 4 (d) 8

If (x+y)^3-\ (x-y)^3-6y\ (x^2-y^2)=\ k y^3, then k= (a)1 (b) 2 (c) 4 (d) 8

x^(2)dx-y^(2)dy+xdx=dy-ydy-dx A) 2(x^(3)-y^(3))-3(x^(2)+y^(2))+6(x-y)=c B) 2(x^(3)-y^(3))+3(x^(2)-y^(2))+6(x+y)=c C) 2(x^(3)-y^(3))-3(x^(2)+y^(2))-6(x-y)=c D) 2(x^(3)-y^(3))+3(x^(2)+y^(2))+6(x-y)=c

The number of second degree terms in the expression 2x^(3)-3x^(2)y+5x^(2)-6y^(2)+8x^(2)y-4x^(2)y^(2) is _____

Find the centre and radius of each of the following circle : (i) x^(2)+y^(2)+4x-4y+1=0 (ii) 2x^(2)+2y^(2)-6x+6y+1=0 (iii) 2x^(2)+2y^(2)=3k(x+k) (iv) 3x^(2)+3y^(2)-5x-6y+4=0 (v) x^(2)+y^(2)-2ax-2by+a^(2)=0

If x^(2)+y^(2)+6x+2ky+25=0 to touch y-axis then k=

If x^(2)+y^(2)+6x+2ky+25=0 to touch y-axis then k=