Question

Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Which shows the correct substitution of the values a, b, and c into the quadratic formula? Quadratic formula time remaining 51:36

Answer 1

A = 1
b = -2
c = -3

And when you plug in and solve you'll get correct answers of x = 3 and x = -1

Answer 2

Answer:

The values of x = -1 and 3

Step-by-step explanation:

The general form of the equation is given by : ax² + bx + c = 0

And the given equation of the form is given to be : x² - 2x - 3 = 0

Now, comparing both the equations, we get :

a = 1 , b = -2 , c = -3

Now, The quadratic formula is given by :

$x = \frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\implies x =\frac{2\pm\sqrt{4+12}}{2}\\\\\implies x = \frac{2\pm 4}{2}\\\\\im ies x = \frac{2-4}{2}\:\:and\:\:x=\frac{2+4}{2}\\\\\implies x = -1\:\:and\:\:x=3$

Therefore, The values of x = -1 and 3