ka6D2enacrockdar ka6D2enacrockdar
  • 02-03-2017
  • Mathematics
contestada

Solve for x by completing the square:

x^2+10x+9=0

x = 1, x = 9
x = - 1, x = - 9
x = 11, x = - 21
x = - 11, x = 21

Respuesta :

Аноним Аноним
  • 03-03-2017
x^2 + 10x = -9
(x+5)^2 - 25 = -9
(x+5)^2 = 16
x+5 = +/- 4
x = -1 ,   x = -9
Answer Link

Otras preguntas

how many books did Harriet beecher stowe write?
Which substance will combine with oxygen gas to produce a greenhouse gas? a. Na b. S c. H₂ d. Ne e. C
what does the zeppelin
what type of fractions are the following A) 1/3 A) Improper B) mixed C)wholeB) 5 1/6C) 6/5answer A B C with the three multiple choice answers.
Identify the turning point of the function f(x)=x^2-2x+8 by writing its equation in vertex form. Show work
Tear is to sorrow as smile is to
What are some reasons why Immigrats people come to the U.S.?
why did  the volcano explode
Which substance will combine with oxygen gas to produce a greenhouse gas? a. Na b. S c. H₂ d. Ne e. C
1. What is the respiratory structure of a millipede? A. book lungs B. tracheal tube C. gill slits 2. what is the respiratory structure of a spider? A. gills B.