Fill in your given numbers:
pq Formula (quadratic formula)
The pq-formula is the better option compared to the more common quadratic formula (or ABC formula). It is about solving quadratic equations.
To get the pq you have to go like this:
ax² + bx + c = 0 | : a
x² + b/a x + c/a = 0
x² + px + q = 0
Now you can use the much more practical pq-formula shown on the left of this website.
How to use it
Enter values for p and q in both text fields.
The buttons on the left side show the possible symbols you can enter. Decimals and fractions are supported.
To calculate the result with your input press the green "="-button.
What does the calculator do?
It might take some seconds before the result shows up.
- Inserts your values. Simplifies your input (if you did enter fractions)
- Shows every step to calculate the result.
- Shows the results for x1 and x2.
Want to be more mobile?
Download that calculator as App!
Your calculation will appear here!
Video introduction
Susanne from MathemaTrick provides a comprehensive tutorial about solving quadratic equations and discussing all possible cases that could happen.
It is a German tutorial. If you do not understand the language, activate subtitles and set up translation in the video settings. It is worth it!
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