Complex Roots of a Quadratic equation

A quadratic equation is a polynomial equation where the highest exponent of the variable is 2. It is represented as ax2 + bx + c = 0. This equation has imaginary or complex roots when the discriminant (D = b2-4ac) is less than zero.

Complex roots of a quadratic equation always occur in pairs, i.e. if α and β are complex roots of a quadratic equation, then they are of the form (c + id) and (c – id), where ‘c’ and ‘d’ are real numbers and ‘i’ denotes the square root of -1 called as iota.

Complex Roots

Complex roots in mathematics typically arises when solving polynomial equations that don’t have real solutions. A complex number is composed of a real part and an imaginary part and is generally written in the form a+bi where a and b are real numbers, and i is the imaginary unit with the property i2=−1.

Complex Roots

Complex roots refer to the solutions of equations that take the form of complex numbers, occurring when the discriminant of a quadratic equation is less than zero. These roots, which are also known as imaginary roots, are expressed in the format α = a + ib and β = c + id, where each root comprises a real component and an imaginary component.

In this article, we will learn about complex roots, arithmetic operations on complex roots, methods to find complex roots of a quadratic equation, and some practice problems based on them.

Table of Content

  • Complex Roots
    • Complex Roots Definition
    • Mathematically
  • Complex Roots of a Quadratic equation
  • Operations on Complex Roots
    • Addition Of Complex Roots
    • Subtraction of Complex Roots
    • Multiplication of Complex Roots
    • Division Of Complex Roots
  • Properties Of Complex Roots
    • Polar Representation of Complex Roots
  • How to Find Complex Roots of a Quadratic Equation?
  • Complex Roots Examples
  • Practice Problems on Complex Roots

Similar Reads

Complex Roots

Complex Roots are the imaginary roots of equations. The roots of any function/equation are those input values which when substituted into the function/equation yield zero as the output. Quadratic roots having discriminant less than zero have complex roots....

Complex Roots of a Quadratic equation

A quadratic equation is a polynomial equation where the highest exponent of the variable is 2. It is represented as ax2 + bx + c = 0. This equation has imaginary or complex roots when the discriminant (D = b2-4ac) is less than zero....

Operations on Complex Roots

Various arithmetic operations such as addition, subtraction, multiplication and division are applicable on complex roots. Each operation on complex roots is discussed in brief as follows....

Properties Of Complex Roots

Various properties of complex roots are explained under various heading that includes:...

How to Find Complex Roots of a Quadratic Equation?

Quadratic equation is an equation which can be represented as ax2+bx+c=0, where a ≠ 0. The values of the unknown variable x which satisfy the above equation are called as solutions or roots of the equation. Determination of roots of a quadratic equation is done with help of discriminant (D = b2 – 4ac). The roots of a quadratic equation depend upon the value of discriminant as follows:...

Conclusion of Complex Roots

Complex roots are special types of solutions to equations that appear as complex numbers, particularly when dealing with quadratic equations whose discriminant is negative. complex roots consist of a real part and an imaginary part, represented as α = a + ib and β = c + id, where “i” is the square root of -1. In the realm of quadratic equations, such as ax2 + bx + c = 0, complex roots always come in pairs and exhibit symmetry around the real axis....

Complex Roots Examples

Example 1: Find the roots of the quadratic equation represented as x2 – 4x + 13 = 0....

Practice Problems on Complex Roots

P1: Find the roots of the equation: x3 – 1 = 0....

Complex Roots – FAQs

What are complex roots?...