X^2 + 4x - 12 help ..

Step-by-step explanation:

In order to be undefined, the fraction must have the denominator equal to 0, therefore we need to solve the equation

This is a second degree equation, and we can re-write it to

We notice that the solution to be composed of 2 values:

x = 6

and

x = -2

Therefore the set of values of x for which the said expression is undefined is

S={-2, 6}

Alternatively, if you don't notice how to re-write it factored, you can use the 2nd degree equation solving algorithm:

Step-by-step explanation:

In order to be undefined, the fraction must have the denominator equal to 0, therefore we need to solve the equation

This is a second degree equation, and we can re-write it to

We notice that the solution to be composed of 2 values:

x = 6

and

x = -2

Therefore the set of values of x for which the said expression is undefined is

S={-2, 6}

Alternatively, if you don't notice how to re-write it factored, you can use the 2nd degree equation solving algorithm:

That can be factored:

(x +6) * (x -2)

Therefore, x = -6 and x =2

Step-by-step explanation:

(X - 2) (x + 6) is the answer

B)4

C)-20

D)-4

the answer is D -4

Step-by-step explanation:

you plug f(x) into 4x. y=4(2)-12 have a good day :)

The answer to your question is:    (  x + 6  ) ( x - 2 )

Step-by-step explanation:

             Factor             x² + 4x - 12 = 0

    Find two numbers that added gives +4 and if we multiply them get -12

We can find these numbers by decomposing -12 in its prime factors

           12    2

             6   2                         12 = 2 x 2 x 3

             3    3                  now combine the numbers to get -12 and + 4

             1                             2    and   2 x 3 = 6

                                        and 2 x 6 = 12

Then

                               (  x + 6  ) ( x - 2 )

That can be factored:

(x +6) * (x -2)

Therefore, x = -6 and x =2

Step-by-step explanation: