(3y)quad (" iv ")(3a-7b-c)^(2)

Expand each of the following, using suitable identities : (i) (x+2y+4z)^(2) (ii) (2x-y+z)^(2) (iii) (-2x+3y+2z)^(2) (iv) (3a-7b-c)^(2) (v) (-2x+5y-3z)^(2) (vi) [(1)/(4)a-(1)/(2)b+1]^(2)

Expand each of the following, using suitable identities: (i) (x+2y+4z)^2 (ii) (2x-y+z)^2 (iii) (-2x+3y+2z)^2 (iv) (3a-7b-c)^2 (v) (-2x+5y-3z)^2 (vi) [1/4a-1/2b+1]^2

Expand each of the following , using suitable identities : (i) (x+2y+4z)^2 (ii) (2x-y+z)^2 (iii) (-2x+3y+2z)^2 (iv) (3a-7b-c)^2 (v) (-2x+5y-3z)^2 (vi) (1/4a-1/2b+1)^2

Expand each of the following, using suitable identities: (i) (x+2y+4z)^2 (ii) (2x-y+z)^2 (iii) (-2x+3y+2z)^2 (iv) (3a-7b-c)^2 (v) (-2x+5y-3z)^2 (vi) [1/4a-1/2b+1]^2

Factorize: 9a^(2)-16b^(2)( ii) 36a^(2)-(x-y)^(3)80a^(2)-45b^(2)( iv) (3a-b)^(2)-9c^(2)

Expand : (iv) (6a - 7b)^3

Simplify : (i) (5x - 9y) - (-7x + y) (ii) (x^(2) -x) -(1)/(2)(x - 3 + 3x^(2)) (iii) [7 - 2x + 5y - (x -y)]-(5x + 3y -7) (iv) ((1)/(3)y^(2) - (4)/(7)y + 5) - ((2)/(7)y - (2)/(3)y^(2) + 2) - ((1)/(7)y - 3 + 2y^(2))

Subtract: (i) 5a + 7b - 2c from 3a - 7b + 4c (ii) a - 2b - 3c from -2a + 5b - 4c (iii) 5x^(2) - 3xy + y^(2) from 7x^(2) - 2xy - 4y^(2) (iv) 6x^(3) - 7x^(2) + 5x - 3 from 4 - 5x + 6x^(2) - 8x^(3) (v) x^(3) + 2x^(2) y + 6xy^(2) - y^(3) from y^(3) - 3xy^(2) - 4x^(2) (vi) -11 x^(2) y^(2) + 7xy - 6 from 9x^(2) y^(2) - 6xy + 9 (vii) -2a + b + 6d from 5a - 2b - 3c

Use a suitable identity to get each of the following products. (i) (x+3)(x+3) (ii) (2y+5)(2y+5) (iii) (2a-7)(2a-7) (iv) ((3a)-1/2)((3a)-1/2) (v) (1.1m-0.4)(1.1m+04) (vi) (a^2+b^2)(-a^2+b^2) (viI) (6x-7)(6x+7) (vii) (-a+c)(-a+c) (viii) (x/2+(3y)/4)(x/2+((3y)/4) (ix) (7a-9b)(7a-9b)