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Plz help me with this

Plz help me with this-example-1

1 Answer

1 vote

Answer:
\bold{c)\quad (11+7i)/(5)}

Explanation:


(3+i)/(2-i)\cdot(4+i)/(2+i)\\\\\\\text{Multiply using any method:}\\=(12+7i+i^2)/(4+2i-2i-i^2)\\\\\\\text{Add like terms and replace }i^2\ \text{with -1}\\=(12+7i+(-1))/(4-(-1))\\\\\\=\large\boxed{(11+7i)/(5)}

User Beertastic
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