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 ( 58+ )
Otras preguntas
PLEASE HELP AS SOON AS POSSIBLE THIS ASSIGNMENT IS DUE IN 5 MINUTES Atoms in a molecule are bonded together by sharing, gaining, or losing______? A. Photons B
Who killed the electric car video discussion questions answers?
the isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides le
In a closed system, the total energy prior to an energy transformation is _______ the total energy after. A. equal to B. unrelated to C. greater than
What did Europeans build much of during the eleventh and twelfth centuries??
Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. If Tim's phone bill was $28.56, which equation could be used t
Use the expression below.–4b + 8c + 12 – 8b – 2c + 6Part ASimplify the expression. Enter your answers in the boxes. b + c + Part BFactor the simplified expr
The Berlin Wall divided the city, but it represented a larger division. What was it? A. the division between politics and government B. the division between
Which of the following is the least effective way to reach a potential sales prospect? Referral Cold call Direct mail Personal visit
I need help with a, b, c, d, and e on the long answer
