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

b. x = -4 or x = -3

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.