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Show that | (-a(b^2 + c^2 - a^2), 2b^...

Show that `| (-a(b^2 + c^2 - a^2), 2b^3, 2c^3), (2a^3, -b(c^2 + a^2 - b^2), 2c^3), (2a^3, 2b^3, -c(a^2 + b^2 - C^2))|` = abc`(a^2 + b^2 + c^2)^3`

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