Finding x for Real Number Complex Number z = (x+5) - (8-2x)i
To find the value of x such that z is a real number, we need to find when the imaginary part of z is equal to zero.
The imaginary part of z is given by (x+5) - (8-2x)i.
Setting this equal to zero, we have:
(x+5) - (8-2x)i = 0
Expanding this equation, we get:
x + 5 - 8 + 2xi = 0
Combining like terms, we have:
3 + 2xi = 0
Setting the real part equal to zero, we have:
3 = 0
This equation is not satisfied for any value of x.
Therefore, there is no value of x such that z is a real number.
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