Question

Can someone help me with this please!! I’ll give brainliest plus free points

Answer 1

Answer:

The answer to your question is:  x₁ = 9     ;   x₂ = -2, third option

Step-by-step explanation:

The excluded values are those that make the denominator equal to zero.

To find the excluded values, just factor the denominator and equal to zero to find the roots.

Process

                                                               

                            x² - 7x - 18

- Find to numbers that added gives -7 and multiply -18.

- These numbers are -9 and + 2, because

           -9 + 2 = -7

and    -9 x 2 = -18

                          (x - 9) (x + 2) = 0

                          x₁  - 9 = 0               x₂ + 2 = 0

                         x₁ = 9                      x₂ = -2

Test

            (9)² - 7(9) - 18                      (-2)² - 7(-2) - 18

            81 - 63 - 18                          4 + 14 - 18

            81 - 81                                  18 - 18

            0                                           0

Answer 2

Answer: The answer to your question is:  x₁ = 9     ;   x₂ = -2, third option

Step-by-step explanation: