# What do complex roots mean?

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## What do complex roots mean?

Complex solutions or roots are numbers that have an imaginary part to them. The imaginary part, i, is found when taking the square root of a negative number.

## What is a complex root example?

Such a graph tells us that the roots of the equation are complex numbers, and will appear in the form a + bi. The complex roots in this example are x -2 + i and x -2 – i. These roots are identical except for the sign separating the two terms. One root is -2 PLUS i and the other root is -2 MINUS i.

## What is a root of a complex number?

The roots of a complex number are also given by a formula. A complex number a + bu0131 is an nth root of a complex number z if z (a + bu0131)n, where n is a positive integer.

## Whats a real and complex root?

The Fundamental Theorem of Algebra assures us that any polynomial with real number coefficients can be factored completely over the field of complex numbers . In the case of quadratic polynomials , the roots are complex when the discriminant is negative

## What are complex roots of a function?

complex rootA complex root is a complex number that, when used as an input ( ) value of a function, results in an output () value of zero. Imaginary NumbersAn imaginary number is a number that can be written as the product of a real number and .

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## How do you find complex roots?

Imaginary or complex roots will occur when the value under the radical portion of the quadratic formula is negative. Notice that the value under the radical portion is represented by b2 – 4ac. So, if b2 – 4ac is a negative value, the quadratic equation is going to have complex conjugate roots (containing i s).

## What do complex zeros represent?

Zeros are the solutions of the polynomial; in other words, the x values when y equals zero. Real zeros are the values of x when y equals zero, and they represent the x-intercepts of the graphs. Complex zeros are values of x when y equals zero, but they can’t be seen on the graph.

## What are complex roots?

Complex solutions or roots are numbers that have an imaginary part to them. The imaginary part, i, is found when taking the square root of a negative number.

## What is a complex root of a function?

You will see that there are roots, but they are not x -intercepts because the function does not contain (x,y) pairs that are on the x -axis. We call these complex roots. By setting the function equal to zero and using the quadratic formula to solve, you will see that the roots are complex numbers.

## How do you know if there is a complex root?

The Fundamental Theorem of Algebra assures us that any polynomial with real number coefficients can be factored completely over the field of complex numbers . In the case of quadratic polynomials , the roots are complex when the discriminant is negative