## burhan101 Group Title Factor x²+4x-4 one year ago one year ago

1. burhan101 Group Title

is it a quadratic equation question ?

2. micahwood50 Group Title

Do you mean x²+4x+4?

3. burhan101 Group Title

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

4. micahwood50 Group Title

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

5. micahwood50 Group Title

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

6. Copythat Group Title

Using the quadratic formula would be the easiest method

7. micahwood50 Group Title

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

8. burhan101 Group Title

yeah, i dont think the formula's working

9. burhan101 Group Title

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

10. Copythat Group Title

You could try factoring out the x. x(x+4)-4

11. micahwood50 Group Title

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

12. burhan101 Group Title

but the i get a number over x

13. micahwood50 Group Title

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

14. burhan101 Group Title

yes you're right i got 7/6

15. micahwood50 Group Title