kimberly198116 kimberly198116

23-01-2022
Mathematics

contestada

7 and -3 are the roots of the quadratic equation x^2+kx-21=0 what is the value of k

Respuesta :

jen4755 jen4755

23-01-2022

Answer:

-4

Step-by-step explanation:

The roots are 7 and -3, so the factored version is (x - 7) (x + 3)

Foil them and you get x^2 - 4x - 21

Answer Link

Otras preguntas

One thing both Dr. Martin Luther King and President Kennedy possess that mark them as great public speakers is: A. speaking style. B. eloquence. C. honesty.

Which is not eguivlent to the shaded area of the rectangle(4/12)

stella has twice as many fish in her tank as catherine .catherine has twice as many fish in her tank as rita .they have 70 fish altogether. how many fish does r

Which equation can be simplified to find the inverse of y=2x^2

Please help on this 2 questions I have

How did the war and the peace settlement change European colonialism and plant seeds for further colonial discontent?

In which case did the Supreme Court rule that the U.S. government had the right to regulate private business?

According to today’s historical theories, Native Americans first migrated to the Americas over __________ years ago. a. 500 b. 1,000 c. 5,000 d. 15,000

leah wrote two different fractions with the same denominator.both fractions were less than 1.can their sum equal 1? can their sum be greater than 1?explain why

what process can form an alluvial fan