anonymous
  • anonymous
How do I subtract 3√3i - 3i without using a calculator?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
is 'i' the imaginary number or a variable? @abcdx6
anonymous
  • anonymous
it's an imaginary number
anonymous
  • anonymous
I'm trying to learn how to add and subtract these kinds of problems even without the imaginary number..

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anonymous
  • anonymous
You don't need to. Just factor out the 3i from both terms: 3√3i - 3i = (√3 - 1)3i = (3√3 - 3)i. That's the final complex number. If you want to write it in the form a + bi then you can re-write that as 0 + (3√3 - 3)i where a = 0 and b = (3√3 - 3). @abcdx6
anonymous
  • anonymous
omg thank you! :)

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