asandasoso740 asandasoso740
  • 03-06-2021
  • Mathematics
contestada

when
[tex] {x}^{3} + a {x}^{2} + 5x + 3[/tex]
is divided by
[tex]x + 2[/tex]
the remainder is b. Determine the value of b​

Respuesta :

swiler
swiler swiler
  • 04-06-2021

x³ + ax² + 5x + 3. x + 2 = 0

x = -2

(-2)³ + a(-2)² + 5(-2) + 3 = 0

-8 + 4a - 10 + 3 = 0

4a - 15 = 0

4a = 15

a = 15/4

Answer Link

Otras preguntas

Complemetary angles are two angles whose measures add up to 90 degrees. The ratio of the measures of two complementary angles is 2:13. What are the measures of
Who founded New France?
biology questionsss, help pls <3 ty
How hold do you have to be to have a credit card
Ashley is preparing for a horse riding competition. She has trained her horse for 5 hours and has completed 195 rounds. At what rate has Ashley ridden her horse
Curve of elecroexcitability is a dependence of
Evaluate 32 divided by 0
the inequality 7 - 2/3x < x - 8 is equivalent to a. x > 9 b. x > -3/5c. x < 9d. x < -3/5please show work
Five closely related species of frogs live in ranges that overlap. Some breed in woodland ponds, some in lowland swamps, and some in streams. How do these five
The escalating sectional crises over slavery in the 1850s contributed to the volatile tensions that arose during the 1860 presidential campaign. Abraham Linco