Find the complex conjugate of the following complex numbers
a) 2 + 6 i
b) -8 i
c) 12

Write the following expressions in the form a + b i
a) (2 - 8 i) + (-6 i)
b) -8 i + (3 - 9 i)
c) 6 - (3 - i)
d) (2 - 3 i)(7 - i)
e) (2 + 2 i) / (2 - 2i)

Solutions to above exercises

Find the complex conjugate.
a) 2 - 6 i
b) 8 i
c) 12

Write the following expressions in the form a + b i
a) (2 - 8 i) + (-6 i) = 2 - 14 i
b) -8 i + (3 - 9 i) = 3 - 17 i
c) 6 - (3 - i) = 3 + i
d) (2 - 3 i)(7 - i) = 11 - 23 i
e) (2 + 2 i) / (2 - 2i) = i