English subtitles

← Check using Multiplication - Visualizing Algebra

Get Embed Code
1 Language

Showing Revision 2 created 05/25/2016 by Udacity Robot.

  1. What's great about division is we can always check our answer. We know division
  2. and multiplication are inverse operations of each other, so if I take my answer
  3. 4x to the 6 plus 6x to the 4th minus 3x squared and multipliy it by 2x, what we
  4. were originally divided by, we should get our same polynomial. 2x Times 4x to
  5. the 6 is 8x to the 7th, 2x times 6x to the 4th is 12x to the 5th And 2x times
  6. negative 3x squared is negative 6x cubed, this is great. We know our polynomials
  7. match, so this must be the correct answer to our division problem.