The first mathematical application which we will write a C program for is solving quadratic equations. We will then write some programs to solve equations of higher powers.
Quadratic equations are equations which have a squared variable as their highest power.
So x2 + 2x + 1 = 0, 2x2 – 6x + 7 = 0, and –x2 + 2x –15 = 0 are all quadratic equations, but x3 + 2x2 – 3x + 7 = 0, 2x5 –3x = 0, and 3x – 2 = 0 are not quadratic equations.
Completing the square
Using the quadratic formula
Factors of any ordinary whole numbers are just ...