Seudónimo
Seudónimo
01-04-2015
Mathematics
contestada
completing the square
v^2 + 4v - 22= 10
Respuesta :
naǫ
naǫ
01-04-2015
[tex]v^2+4v-22=10 \\ v^2+4v+4-4-22=10 \\ (v+2)^2-26=10 \\ (v+2)^2=36 \\ \sqrt{(v+2)^2}=\sqrt{36} \\ |v+2|=6 \\ v+2=6 \ \lor \ v+2=-6 \\ v=4 \ \lor \ v=-8 \\ \boxed{v=-8 \hbox{ or } v=4}[/tex]
Answer Link
Panoyin
Panoyin
02-04-2015
v² + 4v - 22 = 10
- 10 - 10
v² + 4v - 32 = 0
v =
-4 +/- √(4² - 4(1)(-32))
2(1)
v =
-4 +/- √(16 + 128)
2
v =
-4 +/- √(144)
2
v =
-4 +/- 12
2
v = -2 +/- 6
v = -2 + 6 ∨ v = -2 - 6
v = 4 ∨ v = -8
Answer Link
VER TODAS LAS RESPUESTAS ( 94+ )
Otras preguntas
How is a bears fur related to homeostasis?please help. HW
name the vertices of the image reflected in the x-axis
What argument does calhoun use to defend slavery?
The mean of 22.3, 19.7, 25.4 and another number is 23.4. Find the missing number
what different people ruled india?
Please help me with number 19
2hat is the sum of 2x-5y need help asap plz
How do you decide which measure of center to use when describing a distribution
An investment of $8,350 earns 5.2% interest compounded monthly over 10 years. Approximately how much interest is earned on the investment?
Which of the following best defines the religious structures of most oceanic island prior to contact with foreigners A)monotheistic B)polytheistic C)atheist