5-1 x 20=56/56 x 90/56 54/67=67
we know that
The conjugate of a complex number is the number with equal real part and imaginary part equal in magnitude but opposite in sign
so
In this problem we have

the conjugate is equal to--------> 
therefore
<u>the answer is the option</u>
10+3i
3x-15+2x-2
=5x-17
use the distribution property