DayDay131 DayDay131

03-06-2018
Mathematics

contestada

Which of the following are solutions to the equation below? Check all that apply. x2 + x - 20 = 0

Respuesta :

adrielcavalcant adrielcavalcant

03-06-2018

Δ = 1 + 4*20 = 81
x' = (-1 + 9)/2 = 4
x'' = (-1 - 9)/2 = -5
4² + 4 - 20 = 0
(-5)² - 5 - 20 = 0
Ok !

Answer Link

lamontgoff14 lamontgoff14

14-11-2019

Answer:-5 and 4

Step-by-step explanation:

apex

Answer Link

Otras preguntas

why is it so difficult for the results of one experiment to become a theory

which factor contributed to the rise of the Akkadian Empire?

Which element atom will form a SMALLER radius when it becomes an ion? Cl S P Mg

Question 3 of 10 Which sentence is an example of third-person narration? A. I asked the teacher to help me figure out a math problem. B. She asked the teacher t

What can knowing the cultural context of a literary work help readers determine? Give examples.

i need the answer to all of the qs

please help me on the question

How does eminent domain affect citizens rights

What is the horizontal distance between points A(-2.5, -1.5) and B(-0.5, -1.5)

a vehicle starts from rsst and after 10 seconds its velocity is 20m/s find the acceleration and the distance travelled.(step by step only please)