Simplify (a+b+c)^2+(a-b+c)^2
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Answer:
(a+b+c)²+(a-b+c)²+(a+b-c)²
(a+b+c)²+(a-b+c)²+(a+b-c)²=a²+b²+c²+2ab+2bc+2ca+a²+b²+c²-2ab-2bc+2ca+a²+b²+c²+2ab-2bc-2ca
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Answer:2a^2+2b^2+2c^2+4ac
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