How do you find the conjugate of # 5i - 4 #?

1 Answer
Dec 8, 2015

Answer:

#-4-5i#

Explanation:

To find a complex conjugate, simply change the sign of the imaginary part (the part with the #i#). This means that it either goes from positive to negative or from negative to positive.

As a general rule, the complex conjugate of #a+bi# is #a-bi#.

Notice that the real part of a complex number comes first. Your number, #5i-4#, can be rewritten as #-4+5i#.

Therefore, the complex conjugate of #-4+5i# is #-4-5i#.