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show that z(1)=(2+1i)/(25),z(2)=(-2+i)/(...

show that `z_(1)=(2+1i)/(25),z_(2)=(-2+i)/((1-2i)^(2))` are conjugate to each other.

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`(-2 +i)/((1-2i)^(2))=(-2+i)/(1+4i^(2)-4i)=(-2+i)/(-(3+4i))`
`=((2-i))/(3+4i)=((2-i)(3-4i))/(-(3-4i))`
`(2-1 1i)/(25)`
sicne, this complex number is the conjugate of `(2+1 1i)/(25)`, the two given complex numbers are conjugate to each other.
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