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" 2."((25)/(4)x^(2)-(1)/(9)y^(2))...

" 2."((25)/(4)x^(2)-(1)/(9)y^(2))

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

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

Suppose x,y in(-2,2) and xy=-1 then the minimum value of a=(4)/(4-x^(2))-(9)/(9-y^(2)) is

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

Factorise the following : (i) 4x^(2)+20x+25 " " (ii) 9y^(2)-66yz+121z^(2) " " (iii) (2x+(1)/(3))^(2)-(x-(1)/(2))^(2)

Factorise the following : (i) 4x^(2)+20x+25 " " (ii) 9y^(2)-66yz+121z^(2) " " (iii) (2x+(1)/(3))^(2)-(x-(1)/(2))^(2)

Factorise the following : (i) 4x^(2)+20x+25 " " (ii) 9y^(2)-66yz+121z^(2) " " (iii) (2x+(1)/(3))^(2)-(x-(1)/(2))^(2)

The equation to the common tangent to the hyperbolas (x^(2))/(25)-y^(2)/(9)=1 and (x^(2))/(9)-y^(2)/(25)+1=0 is