Mathematics, 20.06.2021 04:00 eneidabenitez14

Cho biểu thức: N=(x-a)(x-b)+(x-b)(x-c)+(x-c)(x-a)+ x^2. tính n theo a b c biết x=1/2a+1/2b+1/2c

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Cho biểu thức: N=(x-a)(x-b)+(x-b)(x-c)+(x-c)(x-a)+ x^2. tính n theo a b c biết x=1/2a+1/2b+1/2c...

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