Question

Solve x2 + 4x + 1 = 0.

Answer 1

Answer: Option C ($x=-2$±$\sqrt{3}$)

Step-by-step explanation:

1. To solve this problem you must use the Quadratic formula, which is used to solve quadratic equation. This formula is shown below:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}$

2. Substitute values. Then, you have:

$a=1\\b=4\\c=1$

 $x=\frac{-4+/-\sqrt{4^{2}-4(1)(1)}}{2(1)}$

3. Then,you obtain the following result:

$x=-2$±$\sqrt{3}$