Factorize the following : `28 a^2+14 a^2b^2-21 a^4` `a^4b-3a^2b^2-6a b^3` `2l^2m n-3l m^2n+4l m n^2` `x^4y^2-x^2y^4-x^4y^4`

Factorize the following : (i) 28 a^2+14 a^2b^2-21 a^4 (ii) a^4b-3a^2b^2-6a b^3 (iii) 2l^2m n-3l m^2n+4l m n^2 (iv) x^4y^2-x^2y^4-x^4y^4

Factorize the following : 28a^(2)+14a^(2)b^(2)-21a^(4)a^(4)b-3a^(2)b^(2)-6ab^(3)2l^(2)mn-3lm^(2)n+4lmn^(2)x^(4)y^(2)-x^(2)y^(4)-x^(4)y^(4)

Factorize: 4x^2+12 x y+9y^2 (ii) x^4-10 x^2y^2+25 y^4 a^4-2a^2b^2+b^4

Factorize the following : (i) 20 x^3-40 x^2+80 x (ii) 2x^3y^2-4x^2y^3+8x y^4 (iii) 10 m^3n^2+15 m^4n-20 m^2n^3 (iv) 2a^4b^4-3a^3b^5-6a b^3

Factorize the following : (1) 9x^2y+3a x y (2) 16 m-4m^2 (3) -4a^2+4a b-4c a (4) x^2y z+x y^2z+x y z^2 (5) a x^2y+b x y^2+c x y z

Factorize each of the following expressions: 36 l^2-(m+n)^2 (2) 25 x^4y^4-1 (3) a^4-1/(b^4) (4) x^3-144 x

Factorize the following :20x^(3)-40x^(2)+80x2x^(3)y^(2)-4x^(2)y^(3)+8xy^(4)10m^(3)n^(2)+15m^(4)n-20m^(2)n^(3)2a^(4)b^(4)-3a^(3)b^(5)-6ab^(3)

If m is the A.M. of two distinct real numbers l and n""(""l ,""n"">""1) and G1, G2 and G3 are three geometric means between l and n, then G1 ^4+2G2 ^4+G3^ 4 equals, (1) 4l^2 mn (2) 4l^m^2 mn (3) 4l m n^2 (4) 4l^2m^2n^2

Add the following expressions: (i) x^3-2x^2y+3x y^2-y^3,\ 2x^3-5x y^2+3x^2y-4y^3 (ii) a^2-2a^3b+3a b^3+4a^2b^2+3b^4,-2a^4-5a b^3+7a^3b-6a^2b^2+b^4

Factorize: 4\ (x+y)^2-28 y(x+y)+49 y^2 (2a+3b)^2+2(2a+3b)(2a-3b)+(2a-3b)^2