Question

what should we added to a^2+2abto obtain 4ab+b^2​

Answer 1

Let the number to be added = x

a² + 2ab + x = 4ab + b²

x = 4ab + b² - a² - 2ab

x = 2ab + b² - a²

Answer : 2ab + b² - a²

Answer 2

Answer:

x= a^2+b^2+2ab

Step-by-step explanation:

let we added x

x+a^2+2ab = 4ab+b^2

x= 4ab+b^2-a^2-2ab

x= -a^2+b^2+2ab

______@Deepak Razput