How do you find the discriminant of a quadratic equation?
The discriminant of a quadratic equation is found by multiplying the sum of the B coefficients by the product of the two squares of the A coefficients. The answer is always a sum of squares.
How to find the discriminant of a quadratic equation with complex roots?
Just as in the real number roots, solving a quadratic equation with complex roots can be easier by completing the square. This is because the square root of a square is a square root of a square. If you have two complex roots, then any sum or difference of these roots is also a solution. The same is true of their complex conjugates.
How to find discriminant of a quadratic equation?
The discriminant of a quadratic equation is the square root of the coefficient of the square term. If the coefficient is positive, the discriminant can be either a positive or negative number. If the discriminant is a negative number, the roots of the equation are complex numbers. If the discriminant is a positive number, the roots of the equation are real numbers.
How to find the discriminant of a quadratic equation without radicals?
If you don’t want to use radical methods, you can use a little algebra. With a quadratic equation of the form ax2 + bx + c = 0, the discriminant is b2 – 4ac. If you have two distinct roots, the discriminant must be 0. If you have two equal roots, the discriminant must be 0. If you have no roots, the discriminant must be positive.
How to find the discriminant of a quadratic equation?
One way to find the discriminant of a quadratic equation is by using the quadratic formula. The quadratic formula is a mathematical procedure that allows you to find the roots of an equation in terms of the coefficients of the quadratic. There are two roots to a quadratic equation, so if you want to find the discriminant of a quadratic equation you’ll need to plug each of the roots into the quadratic formula.