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

Fc is a 54-year-old man with a history of chronic heavy alcohol use. he has frequent bouts of gastrointestinal bleeding for which he has been hospitalized on si

7384838384*783847373

Assume the Chilean peso is decreasing in exchange value compared to the U.S. dollar. Who will benefit most in this situation? A Chilean company that imports o

What spurred the need to chart new maritime routes

The graph of which function is decreasing over the interval (–4, ∞)? f(x) = (x + 4)2 + 4 f(x) = –(x + 4)2 + 4 f(x) = (x – 4)2 – 4 f(x) = –(x – 4)2 – 4

Which is an example of complementary base pairing in DNA? A. thymine pairing with cytosine B. guanine pairing with cytosine C. adenine pairing with cytosine

Please help!!!Explaining Cross Products The following three proportions can all be used to solve the problem about Caroline's salary. Explain why the solutions

part 2 listening comprehension spanish

What is the additive inverse of the complex number 9-4i

Need help asap !!!!!!!!!!!