Polynomial Solver
A polynomial solver finds values of x that make a polynomial equal to zero — the roots of that polynomial.
Enter a polynomial equation. Linear and quadratic cases are fully solved and checked. Higher degrees may be reported as not yet supported rather than guessed.
Solve a problem
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Example problems
How this solver works
- Determine degree.
- Use isolation or the quadratic formula.
- Refuse unverified higher-degree guesses.
Worked examples
x^2 - 9 = 0
- (x-3)(x+3)=0
- x=3 or x=-3
Answer: x = 3, x = -3
Common mistakes
Assuming every cubic has a pretty root
Not every polynomial factors nicely over the integers.
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Frequently asked questions
Can it solve cubics?
Not as a general closed-form engine yet. The honest answer is better than an unchecked AI guess.
What is a root?
A number that makes the polynomial evaluate to zero.