camdenarringto
camdenarringto camdenarringto
  • 13-02-2018
  • Mathematics
contestada

Solve the equation using the quadratic formula.

x2 + 3x -2 = 0

Question 7 options:

x = −2±29√4

x = 3±11√2

x =−2±17√3

x = −3±17√2

Respuesta :

easygoingaway123 easygoingaway123
  • 13-02-2018
the last one is the answer

Answer Link
ApusApus ApusApus
  • 21-10-2019

Answer:

[tex]x=\frac{-3\pm\sqrt{17}}{2}[/tex]

Step-by-step explanation:

We have been given an equation [tex]x^2+3x-2=0[/tex]. We are asked to solve the given equation.

To solve our given equation, we will use quadratic formula.

[tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

Substitute the values:

[tex]x=\frac{-3\pm\sqrt{3^2-4(1)(-2)}}{2(1)}[/tex]

[tex]x=\frac{-3\pm\sqrt{9+8}}{2}[/tex]

[tex]x=\frac{-3\pm\sqrt{17}}{2}[/tex]

Therefore, option D is the correct choice.

Answer Link

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