- B SQRT B 2 - 4 A C 2 A This is the other possible solution. For this example we will use a quadratic equation of the form ax2bxc0. This produces the value 36.
Using Goal Seek to solve quadratic equations in Excel.
A quadratic functions variable can take 2 values meaning that there can be 2 solutions. Once with plus. To do this click in cell A1 highlight the number 2 in the formula bar and use the menu Format and then Cells and check the Superscript check box. For example we have the formula y 3x 2 - 12x 95.