Equation number 1 is the standard form of a second grade polinomial
As you can see, a is the number that is multiplying x^2
b is the number that is multiplying x
and c is just a number
For example: 3x^2 + 2x + 1 = 0
a = 3, b = 2 and c = 1
To find the solution of one of this equations (second grade polinomial), we use the formula in equation number 2
It is a formula where you can find the vlaues of x that solve the equation number 1
To use this formula, you need to know the values of a, b an c
For example: 4x^2 + 5x + 1 = 0
a = 4, b = 5, c = 1
Using the formula:
So we have two solutions:
(-5+3)/8 = -2/8 = -1/4
and
(-5-3)/8 = -8/8 = -1
The solutions, or the values of x that solve the equation 4x^2 + 5x + 1 = 0 are x = -1/4 and x = -1