द्विपदों को गुणा करें. (i) `(2x+5) और (4x-3)` (ii) `(y-8) और (3y-4)` (iii) `(25l-05m) और (25l+05

Multiply the binomials.(i) (2x+5) and (4x-3)( ii) (y-8) and (3y-4)( iii) (25l-05m) and (25l+05m)( iv )(a+3b) and (x+5)(v)(2pq+3q^(2)) and (3pq-2q^(2))( vi )((3)/(4)(a^(2))+3b^(2)) and ((a^(2))-(2)/(3)(b^(2)))

Multiply (i) (x-4) and (2x+3) (ii) (x-y) and (3x+5y)

Work out the following divisions. (i) (10x - 25) -: 5 (ii) (10x - 25) -: (2x - 5) (iii) 10y(6y + 21) -: 5(2y + 7) (iv) 96abc(3a -12)(5b - 30) -: 144(a - 4)(b - 6)

Find each of the following products: (i) (x + 3) (x - 3) (ii) (2x + 5)(2x - 5) (ii) (8 + x)(8 - x) (iv) (7x + 11y) (7x - 11y) (v) (5x^(2) + (3)/(4) y^(2)) (5x^(2) - (3)/(4) y^(2)) (vi) ((4x)/(5) - (5y)/(3)) ((4x)/(5) + (5y)/(3)) (vii) (x + (1)/(x)) (x - (1)/(x)) (viii) ((1)/(x) + (1)/(y)) ((1)/(x) - (1)/(y)) (ix) (2a + (3)/(b)) (2a - (3)/(b))

Find each of the following products: (i) (x - 4)(x - 4) (ii) (2x - 3y)(2x - 3y) (iii) ((3)/(4) x - (5)/(6) y) ((3)/(4)x - (5)/(6) y) (iv) (x - (3)/(x)) (x - (3)/(x)) (v) ((1)/(3) x^(2) - 9) ((1)/(3) x^(2) - 9) (vi) ((1)/(2) y^(2) - (1)/(3) y) ((1)/(2) y^(2) - (1)/(3) y)

Divide: 3/5\ b y4/(25) (ii) 8/9\ b y4/3

Check which of the following are the solutions of the equation 5x-4y = 20 . (i) (4,0) (ii) (0,5) (iii) (-2,5/2) (iv) (0,-5) (v) (2,-5/2)

Factorise. (i) 4p^2 - 9q^2 (ii) 63a^2 - 112b^2 (iii) 49x^2 - 36 (iv) 16 x^5 - 144x^3 (v) (l + m)^2 - (l--m)^2 (vi) 9x^2y^2 - 16 (vii) (x^2 - 2xy + y^2) - z^2 (viii) 25a^2 - 4b^2 + 28bc - 49c^2

Factorise: 49 (2x + 3y) ^(2) - 70 ( 4x ^(2) - 9 y ^(2)) + 25 ( 2 x - 3y ) ^(2)

Find (dy)/(dx), when (i) y=sqrt(x) (ii) y=x^(5)+x^(4)+7 (iii) y=x^(2)+4x^(-1//2)-3x^(-2)