How do you factor #3x^2 + 28x + 32#?
Find factors of 32 which ADD to make 28.
The signs are the same both positive
As 3 isa prime number, its only factors are 3 and 1.
As a start, ask what factors of 32 can we use to get to just less than 28. (we still have to ADD on something...)
Choose factors and cross-mulitply