Originally Posted by

**NecroWinter** My time is pretty limited when I take tests and quizzes, and this problem seems like it would take too long for what its worth given my current knowledge.

36y^2-35+12y

i can get 36y^2+42y-30y-35 and do the rest from there. However I am wondering if theres a quicker way to figure this problem out. The way I get this is:

36*-35=-1260

42*-30 = -1260

42+-30= 12

I dont know how im supposed to just know that or calculate that in a reasonable amount of time. so im wondering is there some trick to factoring trinomials like this in a faster, more efficient way? I typically use the grouping method. Hopefully my only options arent limited to pure trial and error.