DrWhoTardis
DrWhoTardis
02-06-2015
Mathematics
contestada
solve for x: 2xsquared+4x-16=0
Respuesta :
Panoyin
Panoyin
02-06-2015
2x² + 4x - 16 = 0
2(x²) + 2(2x) - 2(8) = 0
2(x² + 2x - 8)
=
0
2 2
x² + 2x - 8 = 0
x =
-(2) ± √((2)² - 4(1)(-8))
2(1)
x =
-2 ± √(4 + 32)
2
x =
-2 ± √(36)
2
x =
-2 ± 6
2
x = -1 ± 3
x = -1 + 3 U x = -1 - 3
x = 2 x = -4
Answer Link
VER TODAS LAS RESPUESTAS ( 96+ )
Otras preguntas
All of the following are characteristics of Mayan society except
Which of the following is not true about genes? They are passed down from your ancestors. They contain instructions for your physiology and behavior. Some peopl
What equals 17 by multiplying
1) There are a total of 18 chairs. If the ratio of the red chairs to brown chairs is 2 to 4 , how many of them are red. 2) rock can read 10 books in 30 minutes
President Kennedy was relatively unsuccessful in passing civil rights legislation during his time in office because __________. a. congressional Democrats were
is 6/8 greater than 6/7
One isotope of nitrogen has 7 protons and 8 neutrons. Which is the correct reference for this isotope? A. nitrogen-15 B. nitrogen-8 C. nitrogen-7 D. nitrog
train A arrives at central station on the hour and every 12 minutes . train B arrives on the hour and every 15 minutes . when do both trains arrive at the same
what is the lining of the uterus break down
The movie theater has 250 seats 225 seats were sold for the carriage showing what percent of seats are empty?
