Question

Solve the quadratic equation numerically (using tables of x- and y- values). x squared + 7 x + 12 = 0 a. x = -1 or x = -1 c. x = -3 or x = -3 b. x = -4 or x = -3 d. x = 2 or x = -1 Please select the best answer from the choices provided

Answer 1

Answer:

b. x = -4 or x = -3

Step-by-step explanation:

$x^{2} +7x+12$

To factor this, come up with two numbers that can be multiplied together to get 12, but add to get 7.

We get 4 and 3.

4 + 3 = 7

4 x 3 = 12

Now we can factor with these two numbers:

$(x+4)(x+3) = 0$

Now, solve for x by separating the factors:

$x + 4 = 0$

$x = -4$

And,

$x + 3 = 0$

$x = -3$

So, the answers are -4 and -3.