Learn how to solve Quadratic Equations with Complex Roots
The discriminant tells us whether a quadratic equation will have 0, 1 or 2 real roots (solutions)
The terms ‘solutions’ and ‘roots’ are often used interchangeably
In the case where there are 0 real roots there will be complex roots
We can use the quadratic formula to find complex roots
Complex roots use imaginary numbers
Imaginary numbers are built from the imaginary unit, i
i is equal to the square root of -1
Learn more about our Complex Numbers course here
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