outsider9665 outsider9665
  • 21-05-2018
  • Mathematics
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How do you simplify #(-3 - 2i)(-3 + 3i)#?

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crisforp
crisforp crisforp
  • 21-05-2018
So, ( -3 - 2i )( -3 + 3i ) = 9 - 9i +6i - 6i^2 = 9 - 3i - 6·(-1) = 9 + 6 - 3i = 15 - 3i;
We have / 15 +(- 3)i / = 15.29;[tex] \sqrt{ 15^{2} + (-3)^{2} } = \sqrt{225 + 9} = \sqrt{234} = [/tex]
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