lol123456789cole lol123456789cole
  • 10-04-2022
  • Mathematics
contestada

Select the quadratic that has roots x = 8 and x = -5.
A
x2 + 3x - 40
B
x² – 3x – 40
C
x? + 13x + 40
D
x? - 13x + 40

Respuesta :

loneguy
loneguy loneguy
  • 10-04-2022

[tex]\text{ The roots are}~ \alpha = 8~ \text{and}~ \beta = -5\\\\\text{Equation for the given roots,}\\\\x^2 -(\alpha +\beta )x +\alpha \beta = 0\\\\\implies x^2 -(8-5)x + 8(-5)=0\\\\\implies x^2 -3x -40=0\\\\\text{Hence, the answer is option B}[/tex]

Answer Link

Otras preguntas

When excess dilute hydrochloric acid was added to sodium sulphite 960 of sulphuric (iv) oxide was produced. calculate the mass of sodium sulphat
find the product (2y - 2nb) (y+4nb)
An ideal spring is fixed at one end. A variable force F pulls on the spring. When the magnitude of F reaches a value of 49.1 N, the spring is stretched by 15.2
A cone has a slant height of a 26 cm and a radius of 10 cm what is the height of the cone
Solve 4(5)^x= 500. help please
A Ф Ф center of triangle ABC. 30° R 15 в What is m/QOB? 0000 30° 60° 75° 90°
Solve the inequality x² + 2x + 1 < 0.
Twenty years ago, you won a state lottery, and you received $15,000 at the end of each of the next 10 years, and $20,000 at the end of years 11 through 15. Sinc
Based on the electron configuration of the two atoms, predict the ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the compound. 1s²2s²2p63s² 1s
Help plsssssss WILL GIVE BRAINLIEST