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Mathematics 8 Online
OpenStudy (anonymous):

How do you solve (2+5i)(-1+5i)?

OpenStudy (whpalmer4):

There's nothing to solve. How do you expand it? Just like you would \[(2+5x)(-1+5x)\]At the end, after doing the multiplication, you substitute \(-1 = i^2\) for further simplification.

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