solve for x: 2xsquared+4x-16=0

Question

02-06-2015
Mathematics

contestada

solve for x: 2xsquared+4x-16=0

Respuesta :

Otras preguntas

1. x^5 times x^3 2. 2x^3 times 2x^2 3. 6^5/6^3 4. x^4/x^7 5. 8^0 6. -(9x)^0 7. (y^4)^3 8. (x^2y)^4 9. 6x^7/2x^4 10. 8x^5/4x*2

HELP MEEEEE DONT DO IT FOR JUST POINTS :( The first pic is how u answer the question the second is the question the last one can help ya

condensation affects weather by

Why would an army want to flank its opponent, or attack its opponent from the side, instead of head on?

Which statement does not describe a reason why more Oklahomans migrated to urban areas after World War II? A. Cities offered steadier hours and income. B. Urban

LEDE Why are ionic compounds usually between metals and nonmetals? Positive ions need to be balanced out by negative ions O Their nuclei are different O They "l

Amin and Bob bought several pieces of chocolates at the supermarket. Bob bought twice thenumber of chocolates bought by Amin. After both of them ate 3 pieces of

how was Rana Sanga a worthy opponent for Babur?

any one know how to do this ?

Gabby is creating a game in which users must create shapes before the clock runs out. Which Python module should Gabby use to create shapes on the screen? a Des

Panoyin Panoyin · Answer 1 · 2015-06-02T00:45:25+02:00

      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