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(x - 1 - 2i) multiplied by (x - 1 + 2i)

(x - 1 - 2i) multiplied by (x - 1 + 2i)
asked 146k views
5 votes
(x - 1 - 2i) multiplied by (x - 1 + 2i)

asked
User Hai Vu
by
8.8k points

1 Answer

5 votes
  • (a+b)(a-b)=a²-b²

Now

  • (x-1-2i)(x-1+2i)

Let x-1=y

  • (y-2i)(y+2i)
  • y²-2i²
  • (x-1)²-2i²
  • x²-2x+1+2
  • x²-2x+3

answered
User NJGL
by
8.6k points
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