factorize 2x^2+4x
Let's factor in : 2x2 + 4x
This expression can be factorized into: x·(2x + 4)
Let's factor in : (2x + 4)
This expression can be factorized into: 2·(x + 2)
Factor found: (x + 2)
Answer:   2x·(x + 2)