Question

plzz urgent answer this
why a^2+b^2=(a+b)^2-2ab​

Answer 1

Answer:

Step-by-step explanation:

According to the first algebraic identity

(a+b)^2 =a^2+2ab+b^2

We just take the 2ab from the left hand side to the right hand side

So now it becomes the opposite sign(-)

There now the identity is

(a+b)^2-2ab=a^2+b^2

Or

a^2+b^2=(a+b)^2-2ab

Hope I answered the question

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