Question

5. Find the product using suitable identity: (x+2y) (x-2xy+4y?)
​

Answer 1

Answer:

x² - 2xy +6xy - 4xy² + 8y²

Step-by-step explanation:

x( x - 2xy +4y) + 2y( x - 2xy +4y)

x² - 2x²y + 4xy + 2xy - 4xy² + 8y²

x² - 2x²y + 6xy - 4xy² +8y²

Hope it will be helpful for you

Answer 2

Answer:

(x+2y) (x^2-2xy+4y^2)

using identity [x+y]^3

(x+y)^3 = [x+y][x^2-xy+y^2]

x^3-x^2y+xy^2+yx^2-xy^2+y^3

x^3+y^3