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Using the properties of determinants, prove the following It 2s=a+b+c then |{:(a^2,(s-a)^2,(s-a)^2),((s-b)^2,b^2,(s-b)^2),((s-c)^2,(s-c)^2,c^2):}|=2s^3(s-a)(s-b)(s-c) |
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