因式分解a2+b2+c2-2ab-2bc+2ac

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因式分解a2+b2+c2-2ab-2bc+2ac因式分解a2+b2+c2-2ab-2bc+2ac因式分解a2+b2+c2-2ab-2bc+2aca2+b2+c2-2ab-2bc+2ac=(a-b)^2

因式分解a2+b2+c2-2ab-2bc+2ac
因式分解a2+b2+c2-2ab-2bc+2ac

因式分解a2+b2+c2-2ab-2bc+2ac
a2+b2+c2-2ab-2bc+2ac=(a-b)^2+2c(a-b)+c^2=(a-b+c)^2

(a-b+c)^2

a" + b" + c" - 2ab - 2bc + 2ac
= a" + 2ac + c" - 2ab - 2bc + b"
= ( a + c )" - 2b( a + c ) + b"
= [ ( a + c ) - b ]"
= ( a - b + c )"