x^(2)+xy+8x+8y

The equation of the parabola with focus (0,0) and directrix x+y=4 is x^(2)+y^(2)-2xy+8x+8y-16=0x^(2)+y^(2)+8x+8y-16=0x^(2)+y^(2)-2xy+8x+8y=0x^(2)-y^(2)+8x+8y-16=0

The graph of the curve x^(2)+y^(2)-2xy-8x-8y+32=0 falls wholly in the first quadrant (b) second quadrant third quadrant ( d ) none of these

The centre of ellipse 5x^(2)+5y^(2)-2xy+8x+8y+2=0 is

Add : 5x^(2)-2xy +8y^(2), 3xy -7y^(2)-2x^(2) and y^(2)+xy-4x^(2) .

Add: 8x^(2) - 5xy - 3y^(2), 2xy - 6y^(2) + 3x^(2) and y^(2) + xy - 6x^(2)

Divide : 8x^(2) - 45y^(2) + 18xy by 2x - 3y.

(b) Factorize 4x^(3) - 10y^(3) - 8x^(2) y + 5xy^(2)

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