Given the complex
equation:
2z -i + 5 = 3z -3i
+1
We need to find the absolute value of
z.
First we need to rewrite z into the format of the
complex number z = a+bi
let us combine terms with z on the
left side.
==> 2z -3z = -3i +1 +i
-5
==> -z = -4 -2i
Now
we will multiply by -1
==> z = 4 +
2i
Now we will calculate the absolute
values.
==> l z l = sqrt(a^2 +
b^2)
= sqrt( 4^2 +
2^2)
= sqrt(16 + 4) = sqrt20 =
2sqrt5
==> l zl =
2sqrt5
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