Open the program Microsoft Excel. For x 2 y -25 3. But what if we want to know x for any given y.
The a b and c values are known numbers where a 0.
- B - SQRT B 2 - 4 A C 2 A A This is the coefficient of the squared term in the quadratic equation. Data for Solving Quadratic Equation To do this we will type in our quadratic equation y a bx cx2 and also define the root of the variable X by typing this quadratic formula x0 -b SQRT b2 - 4ac2a Figure 2. Excel trendline formulas should only be used with XY scatter graphs because only in this chart type both the y-axis and x-axis are plotted as numeric values. Solve Quadratic Equation in Excel using Formula.