Binomial Multiplication Calculator
Binomial Multiplication: calculate results from explicit inputs, with a formula and worked example.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Real finite inputs. Numeric results use floating-point arithmetic; this is not a symbolic computer algebra system.
Example Calculation
- a in ax+b: 1
- b: 2
- c in cx+d: 1
- d: -3
(x+2)(x−3) = x²−x−6.
Frequently asked questions
How do I use this calculator?
Enter a in ax+b, b, c in cx+d, d. The result updates automatically. Use Reset to restore the example values.
What method does it use?
(ax+b)(cx+d) = ac x² + (ad+bc)x + bd. Real finite inputs. Numeric results use floating-point arithmetic; this is not a symbolic computer algebra system.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.