Question

Factor x²+4x-4

Answer 1

is it a quadratic equation question ?

Answer 2

Do you mean x²+4x+4?

Answer 3

no it's -4
i've been working on it, but it's no factoring :/

Answer 4

Because factoring x²+4x-4 is pretty difficult.

Answer 5

Well, It's safe to say that it cannot be factored.

Answer 6

Using the quadratic formula would be the easiest method

Answer 7

@Copythat How can quadratic formula help us to factor it?

Answer 8

yeah, i dont think the formula's working

Answer 9

\[\lim_{x \rightarrow -3} \frac{ x^2+4x-4 }{ x-3 }\]

Answer 10

You could try factoring out the x.

x(x+4)-4

Answer 11

I don't see why you have to factor the numerator. All you have to do is plug -3 into x.

Answer 12

but the i get a number over x

Answer 13

What do you mean? Ave to do is plug -3, like this:\[\frac{ (-3)^2 + 4(-3) - 4 }{ (-3) - 3 }\]

Answer 14

yes you're right i got 7/6

Answer 15

Yeah. Glad I helped.