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 ( 16+ )
Otras preguntas
The mass of one liter of water is about one ____ A : Milligram B : Kilogram C : Gram
Solve the following equation: 28 ÷ 7 + 2 × 3 = ? A. 24B. 18C. 10D. 12
how are american literature and the american identity interrelated
A similarity between the federal and state court systems is that both have trial, appellate, and high courts.family, appellate, and high courts. traffic, appell
How does the rate of a proportional tax change with income? A) The rate increases as income increases. B) The rate remains the same, even if income increases or
(7x^2 - x - 2) - ( -6x^3 + 3) A. 6x^3 + 7x^2 - x - 5 B. -6x^3 + 7x^2 - x + 1 C. -x^3 - x - 5 D. x^2 - x + 1
Which sentence contains no errors in the use of apostrophes? A. Have they heard anything about they're lost dog? B. I thought those books were there's. C. When
The equation s x 2 5 can be used to estimate the speed, s, of a car in miles per hour, given the length in feet, x, of the tire marks it leaves on the ground.
Which change increases the electric force between objects? -Two neutral objects are moved closer together. -Electrons are added to two negatively charged obj
4 shirts for $32.00 rate=______ Unit rate =_____
