Question

multiply 3 minus 2i by its conjugate.​

Answer 1

(3-2i) and the conjugate will be (3+2i) and the multiply -:

= (3-2i)(3+2i)

= 9-4i^2

= 9-4(-1) [bcoz i^2 = -1 this is Euler's law]

= 13

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