I need help on these two problems please!

The answer to your question is below

Step-by-step explanation:

14a           f(x) = (2x + 2)(5 - x²)

Process

1.- Factor (5 - x²)

               (5 - x²) = (

Then        f(x) = (2x + 2) (

2.- Equal each factor to zero

               2x₁ + 2 = 0             - x₂ = 0            ₃ = 0

               2x₁ = -2                  x₂ =                 x₃ = -

                 x₁ = -2/2

                 x₁ = -1

3.- Conclusion

     The roots of the function are

      x₁ = -1

      x₂ =

      x₃ = -

14b.Expand the function

             (2x + 2) (5 - x²) = 10x - 2x³ + 10 - 2x²

or                                      -2x³ - 2x² + 10x + 10

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

range is infinite on both x and y axis positive and negative

step-by-step explanation: