23.2x+4y-8xy-1

Add: 17x+10y-12xy-13,18-7x-10y+8xy,4xy

Equation of the rectangular hyperbola whose focus is (1,-1) and the corresponding directrix is x-y+1=0 . a. x^(2)-y^(2)=1 b. xy=1 c. 2xy-4x+4y+1=0 d. 2xy+4x-4y-1=0

The equation oi the conic with focus at (1,-1) directrix along x-y+1=0 and eccentricity sqrt(2) is xy=1 b.2xy+4x-4y-1=0cx^(2)-y^(2)=1 d.2xy-4x+4y=1=0

How much does 3x^2-14xy+8y^2 exceed x^2+3xy+4y^2-2xy^2

Evaluate : 3x^(2) + 5xy - 4y^(2) + x^(2) - 8xy - 5y^(2)