Zero of a linear polynomial
Find the x-value at which a linear polynomial is zero.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
ax + b = 0 ⇒ x = −b/a
Variables & units
- Coefficient a
- Numeric value · minimum -1000000000, maximum 1000000000
- Constant b
- Numeric value · minimum -1000000000, maximum 1000000000
Worked example
3x − 12 has its zero at x = 4.
Assumptions
A constant polynomial has either no zeros or infinitely many zeros; this tool requires a ≠ 0.
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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