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The discriminant (D) of a quadratic polynomial of the form $ax^2+bx+c$ is calculated using the following formula, where $a$, $b$ and $c$ are the coefficients of the corresponding terms
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$D=b^2-4ac$
Learn how to solve discriminant of quadratic equation problems step by step online. Find the discriminant of the equation 3*2/3x+3/2xy2y^21/7x^2-(3/28x^2+2/9y^2-5/18xy2/15x). The discriminant (D) of a quadratic polynomial of the form ax^2+bx+c is calculated using the following formula, where a, b and c are the coefficients of the corresponding terms. From the equation, we see that a=2, b=\frac{3}3\cdot \frac{2}{3}x+\frac{1}{7}x^2x and c=3\cdot \frac{2}{3}x+\frac{1}{7}x^2. Replacing the values of a, b and c in the previous formula, we obtain. Multiply 4 times -2. Multiply 3 times \frac{2}{3}.