1.Find the following products:
`(y-2)(y+9)`

Find the following products: (9x+2y)(2x-3y+7)

Find the following products: (i) (x+y+2z)(x^2+y^2+4z^2-x y-2y z-2x z) (ii) (2x-y+3z)(4x^2+y^2+9z^2+2x y+3y z-6x z)

Find the following products: (i) (0. 9 x+0. 7 y)(0. 81 x^2-0. 63 x y+0. 49 y^2) (ii) ((2x)/5-(3y)/7)((9y^2)/(49)+(4x^2)/(25)+(6x y)/(35))

Use direct method to evaluate the following products: (v) (3x -2y) (2x +y)

Find the following products: (z+3/4)(z+4/3) (ii) (x^2+4)(x^2+9) (y^2+12)(y^2+6) (iv) (x^2+4)(x^2+9) (p^2+16)(p^2-1/4)

Use direct method to evaluate the following products: (ii) (y+5) (y-3)

Find each of the following products: (-1/(27)a^2b^2)xx\ (9/2a^3b^2c^2) (-7x y)xx(1/4x^2y z)

Find each of the following products: (i) (-5x y)xx(-3x^2y z) (ii) 1/2x y\ xx2/3x^2y z^2

Find the following product and verify the result for x =-1, y=-2: (3x-5y)(x+y)

Find the products: (x+3y)(x^2-\ 3x y+9y^2)