September 2022 1 5 Report
Hasil dari (a + b - 2c)2 adalah ....


a.
a2+b2+4c2+2ab-4ac-4bc


b.
a2-b2+4c2+2ab+4ac-4bc


c.
a2+b2+4c2-2ab+4ac-4bc


d.
a2+b2 - 4c2+2ab-4ac-4bc

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