Solve x2 + 4x – 4 = 0

Quadratic Equations! Yes!

Step-by-step explanation:

Now, there are three methods to solving this:

1.Quadratic Formula

2.Factoring

3. Completing the square

Now, Based on the answers, I think it would be better if we used Quadratic Formula, as you cannot get the answer easily with factoring, and I'm a bit rusty on completing the square.

So, Quadratic Formula! To solve it using this method, we have to find x using this: (the +- before the square root means it could be both positive or negative)

Where a, b are coefficients and c is a term(in a quadratic equation form: )

So, we just have to input the stuff from our equation into the formula!

Now, we can simplify the square root of 32 into 4 times the square root of 2

And, we can divide 2 from it all!

So, there you have it! The Answer is C, or 3.

Hope this helps!

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )