Find :(3`x^2` + 4`y^2`) (3`x^2`-4`y^2`)

Find (3x+4y)^2 .

Find 3x^2y xx 4xy^2 xx 7x^3y^3

Find (2x + 3y)(2x - 3y)

The degree of the polynomial (x^2 + 2x^3) (x^2 -5x^2y^2 + y^4) is

Find the product:(3x +2y) (3y-4x),

IF x^2+y^2=1 and P=(3x-4x^3)^2+(3y-4y^3)^2 then find 'P'.

Find the product of 3x, -4xy, 3x^(2), 4y^(2), 6x^(3)y^(2)

The coefficient of x^3 in (2x-3y) (4x^2+6xy+9y^2) is

Find the value of k if the line 3x-4y=k is a tangent to x^(2)-4y^(2)=5

Find the number of possible common tangents of following pairs of circles (i) x^(2)+y^(2)-14x+6y+33=0 x^(2)+y^(2)+30x-2y+1=0 (ii) x^(2)+y^(2)+6x+6y+14=0 x^(2)+y^(2)-2x-4y-4=0 (iii) x^(2)+y^(2)-4x-2y+1=0 x^(2)+y^(2)-6x-4y+4=0 (iv) x^(2)+y^(2)-4x+2y-4=0 x^(2)+y^(2)+2x-6y+6=0 (v) x^(2)+y^(2)+4x-6y-3=0 x^(2)+y^(2)+4x-2y+4=0