DDesmos SAT Prep
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Polynomial Roots & Factoring Check

Verify a factoring attempt by checking x-intercepts.

The Desmos trick

Graph the original polynomial and click each x-intercept. Every root you find corresponds to a factor — a fast way to check your by-hand factoring or test which answer choice is actually a factor.

  • Type the full polynomial: y = x^3 - 2x^2 - 5x + 6
  • Click each x-intercept to reveal the exact root
  • Each root r means (x - r) is a factor — match this against the answer choices

Practice questions

Q1Which of the following is a factor of x^3 - 2x^2 - 5x + 6?
Medium
Q2The polynomial p(x) = x^3 - 7x + 6 has three real roots. What is the s…
Hard
Q3Which of the following is a factor of x^3 - 6x^2 + 11x - 6?
Easy
Q4The polynomial p(x) = x^3 - 3x^2 - 4x + 12 has three real roots. What …
Hard