Question

(x+3)^3

(x-2)^3

(2-y)^3 

Answer 1

a: \(=x^3+9x^2+27x+27\)

b: \(=x^3-6x^2+12x-8\)

c: \(=8-12y+6y^2-y^3\)

Answer 2

`(x+3)^3=x^3+3.x^2 .3+3x . 3^2+3^3`

            `=x^3+9x^2+27x+27`

`(x-2)^3=x^3-3 .x^2 .2+3x .2^2-2^3`

           `= x^3-6x^2+12x-8`

`(2-y)^3 = 2^3-3.2^2 .y+3.2.y^2-y^3`

            `=8-12y+6y^2-y^3`