Precal Unit 3 Irrational Zeros/Descartes' Rule of Signs Lesson

6 Slides • 4 Questions

1

2

3

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The zeros for the following are (write answers in simplest form):

3. f(x) = 2x³ +5x² -24x - 60;

and

4. f(x) = 3x³ - 15x² - 4x + 20;

and

Drag these tiles and drop them in the correct blank above

-5/2

±2√3

±2√3/3

5

4

5

6

Drag and Drop

Find all the real zeros for the following function.

7. f(x) = x³ - 5x² - 29x -15;

Drag these tiles and drop them in the correct blank above

-3

4±√21

1

-3±2√7

-4

6

6±√39/3

3±3√5/2

7

Drag and Drop

Find all real zeros of the following function.

8. f(x) = x³ + 5x² -25x + 19;

Drag these tiles and drop them in the correct blank above

1

-3±2√7

4±√21

6±√39/3

3±3√5/2

-3

-4

6

8

Drag and Drop

Find all real zeros for the following function.

9. f(x) = x³ + x² -21x -36;

Drag these tiles and drop them in the correct blank above

-4

3±3√5/2

1

3

-3

6

-3±2√7

4±√21

6±√39/3

9

10

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