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

shall we read all the books in passive voice

21. Which of the following statements is true? (1) -18 > -5(2) -5 > -0.5 (3) -5> 0 (4) -5 > 52 (5) -5 > -18

If earth is compressed to the volume of moon, its acceleration due to gravity * i. decreases ii. remains same as before iii. increases iv. none of these

What is the answer of this question?

Given: CD is an altitude of triangle ABC. Prove: a^2 = b^2 +c^2 = 2bccos A

how does high death rate affect population and development in a country

Please select the word from the list that best fits the definition All individuals age 16 and older who are employed in paid positions or who are seeking paid e

Solve for congruent triangles

what is the characteristics of computer?dicuss any 5 of them

In rectangle ABCD, AC = 48 andBO = 5x + 4. What's the value of x? 8.8 4 8 9