Number and algebraCourse skill

Adding and subtracting complex numbers

Collect real parts and imaginary parts separately.

  • Add or subtract the real coefficients. Then do the same for the coefficients of .
  • When subtracting a bracket, change both signs inside it.

Example 1

Subtract both terms

Simplify the expression.

Example 2

Fully simplify the expression.

Your turn

5 practice questions
Question 1

Simplify.

Check answer
Question 2

Simplify.

Check answer
Question 3

Simplify.

Check answer
Question 4

Simplify.

Check answer
Question 5

Simplify.

Check answer
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