Question 294542
{{{(1-4i)/(1+4i)=(1-4i)/(1+4i)*(1-4i)/(1-4i)}}}
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{{{(1-4i)/(1+4i)*(1-4i)/(1-4i)=(1-4i-4i+16i^2)/(1-4i+4i-16i^2)}}}
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{{{(1-4i)/(1+4i)*(1-4i)/(1-4i)=(1-8i-16)/(1+16)}}}
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{{{(1-4i)/(1+4i)*(1-4i)/(1-4i)=(-15-8i)/17}}}
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{{{(1-4i)/(1+4i)*(1-4i)/(1-4i)=-(15/17)-(8/17)i}}}