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express the complex number in standard form(that is like a+bi)



  • precalc -

    rationalize the denominator. I will do one:

    (2+i)/(2-i)= 2+i)(2+i)/(2-i)(2+i)=

    (2+i)^2/(2-i^2)= (4+4i+i^2)/3
    you can complete it.

  • precalc -

    so is that the final answer

  • precalc -

    os is the final answer 8i+i^3/3

  • precalc -


    You can proceed along the same lines for the first problem.

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