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polet [3.4K]
3 years ago
9

10/-8-6i a. -14+12i/17 b. -110+60i/157 c. -52+39i/50 d. -4+3i/5

Mathematics
1 answer:
ella [17]3 years ago
5 0

\frac{10}{ - 8 - 6i}   \times  \frac{ - 8 + 6i}{ - 8 + 6i} =  \frac{ - 80 - 60i}{( - 8 + 6i)( - 8 - 6i)}  \\  =  \frac{ - 80 - 60i}{ - 64 - 36 {i}^{2} }  =  \frac{ - 80 - 60i}{ - 64 + 36}  \\  =  \frac{ - 20 - 15i}{ - 16 + 9}  =  \frac{ - 20 - 15i}{ - 7}
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