计算或化简:(a-b+c)^2

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计算或化简:(a-b+c)^2计算或化简:(a-b+c)^2计算或化简:(a-b+c)^2(a-b+c)^2=[a-(b-c)]^2=a^2-2a(b-c)+(b-c)^2=a^2-2ab+2ac+b

计算或化简:(a-b+c)^2
计算或化简:(a-b+c)^2

计算或化简:(a-b+c)^2
(a-b+c)^2
=[a-(b-c)]^2
=a^2-2a(b-c)+(b-c)^2
=a^2-2ab+2ac+b^2-2bc+c^2
=a^2+b^2+c^2-2ab-2bc+2ac

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

(a-b+c)^2=a^2+b^2+c^2+2ac-2ab-2bc