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

The ratio of boys to girls in a school iş 3: 2. If there are 600 boys in the school, find the number of girls.

He has dissolved Representative Houses repeatedly, for opposing with manly firmness his invasions on the rights of the people.

Any system of government in which a small group holds power is called

0.0058=5.8x10r what is the value of r in the equality belone

If this person hav this what would the other person have

4/7-5/11 I need the answer

Find the slope using the slope formula: (−5,9) (−3,−1)

books written by a famous historian who is an expert on the american revolution, published in 1999

What's the theme for henri de Toulouse-lautec at the moulin rouge, the dance 1890???

How did the growth of the merchant class and trade in Europe impact international commerce? Responses Governments refused to support trade with foreign cultures