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Mathematics 8 Online
OpenStudy (anonymous):

Find the product of the complex number and its conjugate. 1 + 2i

OpenStudy (aravindg):

You have complex number 1+2i. Conjugate is (1-2i). Can you multiply them and see what itsimplifies to?

OpenStudy (anonymous):

1-4i?

OpenStudy (aravindg):

Can you show how you multiplied them?

OpenStudy (anonymous):

(1+4i) (1-4i) Foiled them so 1-2i 2i-4i =1-4i

OpenStudy (aravindg):

Where did 2i come from?

OpenStudy (anonymous):

and I meant to put (1+2i)(1-2i) above instead of the (1+4i) (1-4i) oops

OpenStudy (aravindg):

okay the mistake u r making is|dw:1398473535806:dw|

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