SAT® Math: Operations with Polynomials (3-3)

Add, subtract, and multiply polynomials without sign errors, use full distribution instead of a memorized FOIL, match coefficients when two polynomials are equal for every x, and substitute expressions like f(x − 2) correctly. Lesson 3-3 of 37 in our complete math course for the Digital SAT®. Chapters 0:00 Adding & Subtracting Polynomials 2:43 Multiplying: Full Distribution (FOIL) 6:31 "True for All x" = Match the Coefficients 9:03 Zoom In: f(x − 2) Replaces Every x 11:24 Example 1: Add 12:39 Example 2: Subtract 14:08 Example 3: Multiply 15:35 Example 4: Match Coefficients 16:49 Example 5: Challenge 20:17 What to Remember Mallang Prep SAT® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this video or Mallang Prep. #SATMath #DigitalSAT #SATPrep #Polynomials