Factoring Basic Trinomials with a = 1

[Bobsonomatic]

On problem #2, y^2-15x+36, I'm assuming the "15x" bit is a typo, and should actually be 15y. Not expecting this to be reviewed so long after being posted, but it threw me off at first.

Thanks a lot for all your videos either way, they have been EXTREMELY helpful.

[amerikani]

Am I wrong or is the setup of problem 5 incorrect? Seems that If you listed out the factors of 3x^2-27x+42, and circled the common factors that it would leave you with 3x(x - 9 + 14) Which should make it 3x^2-9x+42x when expanded no???

[xtremecoolness]

2 times 19 is 38 sorry had to let you know