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 ( 79+ )
Otras preguntas
Which theme do All Rivers Run to the Sea and Maus share?
What role do traits play in affecting an organisms ability to reproduce? finches
Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)
When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?
Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? Question 7 options: The heat from the hot water is
Why isn’t it a linear function
same question just a drop box , help
which kind of narrator knows the thoughts and see all of the charters in the story
What is the value of x?
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!