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3 years ago

Solve x2 + 4x + 1 = 0.

Mathematics

1 answer:

docker41 [41]3 years ago

5 0

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:

$x=-2$ ± $\sqrt{3}$

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