factor 4x^2+4x
Let's factor in ℝ: 4x2 + 4x
You can factorize this expression into: x·(4x + 4)
Let's factor in ℝ: (4x + 4)
This expression can be factorized into: 4·(x + 1)
Factor identified: (x + 1)
▶Factored form:   4x·(x + 1)