1. Equations and Inequalities

Complex Numbers

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Identify the real and imaginary parts of each complex number. $-4-9i$

$a = -9, b = -4$

$a = -4, b = -9$

$a = 4, b = 9$

$a = -4, b = 9$

Verified step by step guidance

Understand that a complex number is generally expressed in the form a + bi, where 'a' is the real part and 'b' is the imaginary part.

Given the complex number -4 - 9i, identify the real part 'a' and the imaginary part 'b'.

In the expression -4 - 9i, the real part 'a' is the coefficient of the real number, which is -4.

The imaginary part 'b' is the coefficient of the imaginary unit 'i', which is -9.

Therefore, the correct identification of the real and imaginary parts is a = -4 and b = -9.

Master Introduction to Complex Numbers with a bite sized video explanation from Patrick

Problem sets built by lead tutors

Expert video explanations

Identify the real and imaginary parts of each complex number. −4−9i-4-9i−4−9i