Question

plz tell the whole identity!?!? ​

Answer 1

Answer:

${(a + b + c)}^{2} = {a}^{2} + {b}^{2} + {c}^{2} + 2ab + 2bc + 2ac \\ {a }^{2} + {b}^{2} + {c}^{2} = {(a + b + c )}^{2} - 2ab - 2bc - 2ac$

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Answer 2

Step-by-step explanation:

a^2+b^2+c^2=(a+b+c)-2(ab+bc+ca)

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