3 years ago

SImplify to standard form (a+bi) (12-9i)²

Mathematics

1 answer:

olga2289 [7]3 years ago

5 0

Answer:

Hello,

Step-by-step explanation:

Formula used (a+b)^2=a²+2ab+b²

$(12-9i)^2=3^2*(4-3i)^2\\\\=9*(16-9-24i)\\\\=9*(7-24i)\\\\=63-216i\\$

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