Solve using the Quadratic Formula: x² - 9x + 20 = 0
To solve the quadratic equation using the Quadratic Formula, we start by identifying the coefficients (a), (b), and (c):
a = 1
b = -9
c = 20
The Quadratic Formula is:
Step 1: Calculate the Discriminant
First, we calculate the discriminant (D):
D = 81 - 80 = 1
Step 2: Apply the Quadratic Formula
Now we substitute (b), (D), and (a) into the formula:
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