" (ii) "(25)/(4)x^(2)-(y^(2))/(9)

Factorise : (25)/(4)x^(2) - (y^(2))/(9)

Factorise: (i) 49 a^2+70 a b+25 b^2 (ii) (25)/4x^2-(y^2)/9

Find the eccentricity of the ellipse (i) (x^(2))/(16)+(y^(2))/(9)=1 (ii) (x^(2))/(64)+(y^(2))/(36)=1 (iii)25x^(2)+4y^(2)=100

The eccentricity of ellipse (x^(2))/(25)+(y^(2))/(9)=1 is ……………. .

Factorise : ((25)/(4)x^2-(1)/(9)y^2)

Factorise the following expression: ( i) 4x^(2) +9y^(2) +25z^(2) +12xy +30yz + 20zx (ii) 25x^(2) +4y^(2) +9z^(2) -20 xy +12yz - 30zx

The minimum length of intercept on any tangent to the ellipse (x^(2))/(4)+(y^(2))/(9)=1 cut by the circle x^(2)+y^(2)=25 is :