I do after school tutoring for Math and Science. Whenever I come across a problem or strategy I like, I post it here.
I am also working on a series called "The Math of 'The Martian'" In which I pull out Jr High and High School level Math and Science problems from the book "The Martian"
Tuesday, February 16, 2016
Star Method for Factoring Trinomials
A student showed this to me the other day. It seems to work, but I can't prove, or find a proof for it. So if it is used, the student would need to re-foil the binomials at the end to prove they have the correct answer.
WRONG
ReplyDeleteEx 2 should be 2x + 7
Delete