Question

Which method is the most efficient method to use to solve x^2+4x+3=0

Answer 1

Answer:

Factoring

Step-by-step explanation:

To solve the equation $x ^ 2 + 4x + 3 = 0$, you must apply the factoring method.

You must find two real numbers b and c such that:

$b + c = 4$

and

$b(c) = 3$

Then the expression:

$x ^ 2 + 4x + 3 = 0 = (x + b)(x + c)$

You can prove that:

$b = 3\\c = 1$

So

$x ^ 2 + 4x + 3 = 0 = (x + 3)(x + 1)$

$(x + 3)(x + 1) = 0$

$x +3 = 0$ or $x + 1 = 0$

$x = -3$ or $x = -1$

Answer 2

X will be -1 and -3!