Rational Root Theorem:
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The Rational Root Theorem states that any possible rational zero of a polynomial with integer coefficients is of the form ±p/q, where p is a factor of the constant term and q is a factor of the leading coefficient.
The calculator uses the Rational Root Theorem:
Where:
Explanation: The calculator finds all factors of the constant term and leading coefficient, then computes all possible ±p/q combinations.
Details: Finding potential rational zeros helps in factoring polynomials and solving polynomial equations, which is fundamental in algebra and calculus.
Tips: Enter the constant term and leading coefficient of your polynomial. The calculator will list all possible rational zeros that you can test in your polynomial.
Q1: Does this guarantee actual zeros of the polynomial?
A: No, it only provides potential candidates. You need to test each one to see if it's actually a zero.
Q2: What if my polynomial has non-integer coefficients?
A: The theorem only applies to polynomials with integer coefficients. You may need to multiply through by denominators first.
Q3: Why do we consider both positive and negative factors?
A: The ± in the theorem means we must consider both positive and negative possibilities for each fraction.
Q4: What if there are no rational zeros?
A: The polynomial might only have irrational or complex zeros in that case.
Q5: How do I test if a potential zero is actually a zero?
A: Substitute the value into the polynomial - if it equals zero, then it's an actual zero.