WEBVTT
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It's a complex numbers got three plus four I times
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three minus four I. So we're gonna use our
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full methods to do so. Remember that. Full
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its first outside inside last. So we're gonna multiply
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three times three for our first numbers. Outside would
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be three times negative. Four I inside would be
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four I times three and last. That's gonna be
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four I Tom's negative four I. So let's simplify
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those some. So that would be three times three
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is none negative. 12 i 12 I and negative
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16 squared, which we know that I squared is
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the same as negative one. So we're gonna rewrite
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That is negative 16 times negative one which is positive
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16. So let's combine like terms So I have
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nine minus 12 I plus 12 I plus 16.
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So non plus 16 is 25 and negative 12 I
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plus 12 I is zero. I will zero eyes
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the Samos multiplying zero times square A negative one which
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we know zero times any number is still zero.
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So my solution is 25