This is the currently selected item. X 2 7x 12 0. The four methods of solving a quadratic equation are factoring using the square roots completing the square and the quadratic formula.
Here we will try to describe a few uses by considering a few.
Quadratic equations are also needed when studying lenses and curved mirrors. It is the second degree equation in which one variable contains the variable with an exponent of 2. Why or why not. If the value of b or c in some cases even both are equal to zero the resultant equation will be an incomplete equation.