Question

Expand each of the following using suitable identities: (-1/2a-1/2b+1)²​

Answer 1

Answer:

using formula (a+b+c)^2

a^2 + b^2+ c^2+2ab+ 2bc+ 2ca

=> 1/4a^2+1/4b^2+1+1/2ab-b-a

Answer 2

Step-by-step explanation:

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