Question

what is the formula of (a+b+c)²​

Answer 1

Step-by-step explanation:

a2 + b2 + c2 + 2ab + 2bc + 2ca

Answer 2

Answer:

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

Step-by-step explanation:

you can see it by opening the brackets of

(a+b+c)( a+b+c)

i.e.

a^2+ab+ac+ba+b^2+cb+ca+cb+c^2

so it'll become

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

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