How to add complex numbers
Help Questions
ACT Math › How to add complex numbers
Complex numbers take the form , where 
 is the real term in the complex number and 
 is the nonreal (imaginary) term in the complex number.
Which of the following is incorrect?
Explanation
Complex numbers take the form , where 
 is the real term in the complex number and 
 is the nonreal (imaginary) term in the complex number.
Thus, to balance the equation, add like terms on the left side.
What is the sum of  and 
 given
and
?
Explanation
A complex number is a combination of a real and imaginary number. To add complex numbers, add each element separately.
In equation , 
 is the real component and 
 is the imaginary component (designated by 
).
In equation , 
 is the real component and 
 is the imaginary component.
When added,
Complex numbers take the form , where a is the real term in the complex number and bi is the nonreal (imaginary) term in the complex number.
Simplify: 
Explanation
When adding or subtracting complex numbers, the real terms are additive/subtractive, and so are the nonreal terms.
Complex numbers take the form , where a is the real term in the complex number and bi is the nonreal (imaginary) term in the complex number.
Can you add the following two numbers: ? If so, what is their sum?
Explanation
Complex numbers take the form a + bi, where a is the real term in the complex number and bi is the nonreal (imaginary) term in the complex number. Taking this, we can see that for the real number 8, we can rewrite the number as , where 
 represents the (zero-sum) non-real portion of the complex number.
Thus, any real number can be added to any complex number simply by considering the nonreal portion of the number to be .
Suppose  and 
Evaluate the following expression:
Explanation
Substituting for  and 
, we have
This simplifies to
which equals 
What is the solution of the following equation?
Explanation
A complex number is a combination of a real and imaginary number. To add complex numbers, add each element separately.
First, distribute:
Then, group the real and imaginary components:
Solve to get: