Question

(a+b-c)^2=

*
a^2+b^2+c^2+2ab-2ac-2bc
a^2+b^2+c^2+2 ab-2ac+2bc
a^
a^2+b^2+c^2+2 ab+2ac+2bc
a^2+b^2+c^2-2ab-2ac-2bc​

Answer 1

Answer:

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

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