Question

(x+2y)2=x2+.....+4y2​

Answer 1

Answer:

-4y

Step-by-step explanation:

(x+2y)2 = x2+ .....+4y2

or, 2x+4y = x2+.....+4y2

or, 2x-2x = 4y2- 4y +.....

or, 0 = 4y +.....

or, ..... = -4y

Hope you understand it.

Thank you!