Question

What should be added to a^2 + ab + b^2 to obtain 4ab + b^2 ?

Answer 1

Answer:

2ab-a²

Step-by-step explanation:

Here,

Suppose that the answer should be x.

Then according to Question if x is added to a²+b²+2ab then it will give 4ab+b².

Now we have to express the above line in the form of equation.

(a²+b²+2ab) + x = 4ab+b²

x= 4ab+b²-a²-b²-2ab

x= 2ab-a²

Hence proved...