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LenaWriter [7]
3 years ago
11

If z=4-3i write z squared + 17 in the form a+bi, a,b E R.. Hence solve k(z2+17)=|z|(1-i)

Mathematics
1 answer:
irakobra [83]3 years ago
3 0
z^2+17=(4-3i)^2+17=16-24i-9+17=24-24i\\
|z|=\sqrt{4^2+(-3)^2}=\sqrt{16+9}=\sqrt{25}=5\\\\
k(z^2+17)=|x|(1-i)\\
k(24-24i)=5(1-i)\\
24k(1-i)=5(1-i)\\
24k=5\\
k=\frac{5}{24}


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