Find the product of :
`4x^(2) - 5y^(2) and 3x^(2) +2y^(2)`

Evaluate : (v) (4x^(2) - 5y^(2) ) (4x^(2) + 5y^(2) )

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

If x = 2 and y = 1, Find the value of (-4x^(2)y^(3)) xx (-5x^(2)y^(5)) .

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

Find the products: (x/2+2y)\ ((x^2)/4-x y+4y^2)

Find the product: (1/3x-y^2/5)(1/3x+y^2/5)

Find the product: (x+y)(x-y)(x^2+y^2)

Find the products: (4x-5y)(16 x^2+20 x y+25 y^2)

Find each of the products: (-4x^2)xx(-6x y^2)xx(-3y z^2)

If 7x - 15y = 4x + y , find the value of x: y . Hence, use componendo and dividendo to find the values of : (i) (9x + 5y)/(9x - 5y) (iI) (3x^(2) + 2y^(2))/(3x^(2) - 2y^(2))