`x+y=6` ; If `y=3` then find `x`.

(6) If y=x^2e^-x find y_8

If [(2x+y,3y),(0, 4)]=[(6, 0),( 6, 4)] , then find x .

Givne (x)/(y)=(5)/(6) now x is reduced by 62 and the ratio of x and y becomes (2)/(3) then find x and y respectively :-

If x^(2) + y^(2) = 37 and xy = 6, find x+y

If 2x+3y=13 and x y=6 , find the value of 8x^3+27 y^3

If 2x+3y=13 and x y=6 , find the value of 8x^3+27\ y^3

If [[x+3,2x],[6,y]]=[[7,8],[6,3]] then find x and y

If 3x+2y=12 and x y=6 , find the value of 9x^2+4y^2

If x ,y in R and x^2+y^2+x y=1, then find the minimum value of x^3y+x y^3+4.

If x^(2) + y^(2) =37 and xy = 6 : find x-y