Yes, it is possible to factor the expression x^2+4x-4. The expression can be factored as (x+2)(x-2).
To factor this expression, you can use the factoring method known as grouping. First, you can rewrite the expression as x^2 + 4x - 4 = (x^2 - 4) + 4x. Next, you can group the first two terms (x^2 - 4) and the last two terms (4x) into pairs of binomials, like this: (x^2 - 4) + 4x = (x+2)(x-2).
Alternatively, you could also use the difference of squares factorization to factor the expression. In this method, you would rewrite the expression as x^2 + 4x - 4 = (x^2 - 4x) + 4x = x(x-4) + 4(x-1). This can be further simplified as (x-4)(x+1).
Both of these methods are valid ways to factor the expression x^2 + 4x - 4, and either one would give you the correct answer of (x+2)(x-2).