Square of a sum
Watch a familiar algebraic identity become a number.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
(a + b)² = a² + 2ab + b²
Variables & units
- First value · a
- Numeric value · minimum -1000000000, maximum 1000000000
- Second value · b
- Numeric value · minimum -1000000000, maximum 1000000000
Worked example
(10 + 3)² = 100 + 60 + 9 = 169.
Assumptions
Do not omit the middle term 2ab.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
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