I'm currently learning about trinomial factoring, and I understand it pretty well, but there are a few questions that are giving me a tough time.
For example: 16y^2+56y+49
Here's another one: 15x^2+12+29x
It's usually the questions where when a and c get multiplied and a big number produces that give me trouble. I know that a x c = m x n, but in the first example, when I multiply 49 and 16 and get 784, I can't find the two numbers (m and n) that equal that when multiplied and then get 56 when added.
Am I doing something wrong? If I could have a step by step solution on how to answer a question like that I'd very much appreciate it. I hope my question makes sense.