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91[tex]x^4+16i=0[/tex][tex]x^4=-16i[/tex]solutions are:[tex]x = 2cos(π/8) - 2i *sin(π/8)[/tex][tex]x = 2cos(-π/8) + i *sin(-π/8)[/tex]93[tex]x^3-(1-i)=0[/tex][tex]x^3=(1-i)[/tex]
91
[tex]x^4+16i=0[/tex]
[tex]x^4=-16i[/tex]
solutions are:
[tex]x = 2cos(π/8) - 2i *sin(π/8)[/tex]
[tex]x = 2cos(-π/8) + i *sin(-π/8)[/tex]
93
[tex]x^3-(1-i)=0[/tex]
[tex]x^3=(1-i)[/tex]
