Find the following products `(7x-9y)(7x-9y)`

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

Find the following products: (i) (0.9x+0.7y)(0.81x^(2)-0.63xy+0.49y^(2)) (ii) ((2x)/(5)-(3y)/(7))((9y^(2))/(49)+(4x^(2))/(25)+(6xy)/(35))

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 the products (x+7y) (7x-y)

Find the product: (x + 7y) (7x-y)

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

Find the product : (x + 7y) (7x – y)

Fill in the blanks of the following: x/7=y/3=(3x+5y)/………=(7x-9y)/…….

Add the following expressions: 2x+9y-7z, 3y+z-3x, 3z-4y-x