Question

(a+b-c)2 in equal to______​

Answer 1

(a+b-c)²

☞

a²+b²+c²+2ab−2bc−2ca

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Answer 2

Answer:

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

Step-by-step explanation:

take a+b as one part and c as another, apply formula, you get

a2 + b2 + 2ab + c2 -2ac - 2bc