math problem

math problem

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  • (7+i)(6+5i)
  • No Mr.Math said I got it wrong but I was sure I was right.
  • Did you get that question in class right?
  • I distributed right so I should've gotten the right answer, 7x6=42, 7x5i=35i, ix6=6i, and ix5i=5i2.
  • So the answer should be 42+41i+5i2 but it's not.
  • Im going to have to get a tutor since I don't understand the question.
  • A tutor? I have a friend named Nick who could help.
  • Hi! My names Nick.
  • He explained what you guys did but you messed up with the imaginary numbers.
  • How? I distributed the i's too.
  • You distributed right  but you forgot the rule that i2 is equal to -1.
  • So then 5i2 will be -5 instead since 5(-1)=-5.
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