Problem

Consider the quadratic equation x2−6x+5=0. Find the discriminant of the quadratic equation.

Answer

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Answer

Step 4: Simplify the expression to find the value of D. So, D=36−20=16.

Steps

Step 1 ：Step 1: Identify the coefficients from the quadratic equation. Here, a = 1, b = -6, c = 5.

Step 2 ：Step 2: Use the formula for the discriminant, D=b2−4ac.

Step 3 ：Step 3: Substitute the values of a, b and c into the formula. So, D=(−6)2−4∗1∗5.

Step 4 ：Step 4: Simplify the expression to find the value of D. So, D=36−20=16.

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