Question

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

Answer 1

Answer:

Step-by-step explanation:

required term:-  4ab+b-(a²+2ab+b²)

                         =4ab+b-a²-2ab-b²

                         =2ab+b-a²-b²

                         =2-(a²+b²-2ab)

Answer 2

Answer:

2ab

Step-by-step explanation:

Let p be the required terma2 + 2ab + b2 + p = 4ab + b2p = 4ab + b2 - (a2 + 2ab +b2)Open the brackets4ab + b2 - a2 - 2ab - b2Now combine like terms4ab -2ab + b2 - b2 - a2= 2ab -a2Lets checka2 + 2ab + b2 + 2ab - a2Now combine like terms2ab+ 2ab + 1a2 - 1a2 + b2= 4ab + 0 + b2So the answer is 2ab

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