Question

What should be added to a² + 2ab + b² to obtain 2a²+4ab?​

Answer 1

Answer:

Let x to be add to a^2 +2ab + b^2

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

x = 2a^2 + 4ab

a^2. - 2ab -b^2

- +. +.

a^2. +6ab. +b^2

Answer is a^2 +6ab +b^2