math

how do I write (8-3i)(-2-3i) in standard form?

  1. 1
asked by Haley
  1. FOIL the binomials

    -16 - 24i + 6i + 9i^2 ... i^2 is (√-1)^2

    collect like terms

    -25 - 18i

    posted by Scott
  2. thank you so much

    posted by Haley
  3. again, thank you, but if I may ask, how did you get the square root sign? I am just trying to understand it:)

    posted by Haley

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