If a polynomial p(x) is given by p(x) = x^3 - 6x^2 + 11x - 6, what can be inferr

Practice Questions

Q1
If a polynomial p(x) is given by p(x) = x^3 - 6x^2 + 11x - 6, what can be inferred about its roots?
  1. It has three distinct real roots.
  2. It has one real root and two complex roots.
  3. It has no real roots.
  4. It has two distinct real roots.

Questions & Step-by-Step Solutions

If a polynomial p(x) is given by p(x) = x^3 - 6x^2 + 11x - 6, what can be inferred about its roots?
  • Step 1: Identify the polynomial p(x) = x^3 - 6x^2 + 11x - 6.
  • Step 2: Use the Rational Root Theorem to find possible rational roots. The possible rational roots are the factors of the constant term (-6) divided by the factors of the leading coefficient (1).
  • Step 3: List the factors of -6: ±1, ±2, ±3, ±6.
  • Step 4: Test each possible rational root by substituting them into p(x) to see if they equal zero.
  • Step 5: Use synthetic division to divide p(x) by any root found in Step 4 to simplify the polynomial.
  • Step 6: Repeat the process with the resulting polynomial until all roots are found.
  • Step 7: Conclude that p(x) has three distinct real roots based on the results from synthetic division.
  • Polynomial Roots – Understanding the nature and number of roots of a polynomial function.
  • Rational Root Theorem – A method to identify possible rational roots of a polynomial.
  • Synthetic Division – A technique used to divide polynomials and find roots.
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