What is the first step in solving quadratic equations by finding the square root

For this case we assume that we have a polynomial of the form:

To solve the polynomial, we use the quadratic equation:

To solve this equation, the first step is to solve the determinant.

The determinant is given by:

The first step is to solve the determinant.

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150