sierrajonny3 sierrajonny3
  • 07-07-2020
  • Mathematics
contestada

Select the two values of x that are roots of this equation.
x - 5x+2=0

A. X=
5+33
B. X=
C. x=
5+ _17
2
D. x-5-3​

Select the two values of x that are roots of this equationx 5x20A X533B XC x5 172D x53 class=

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Space
Space Space
  • 07-07-2020

Answer:

A and C

x = -(√17 - 5)/2, (√17 + 5)/2

Step-by-step explanation:

Quadratic Formula: [tex]x = \frac{-b +/-\sqrt{b^2-4ac} }{2a}[/tex]

Step 1: Use quadratic formula

a = 1, b = -5, c = 2

[tex]x = \frac{5 +/-\sqrt{(-5)^2-4(1)(2)} }{2(1)}[/tex]

[tex]x = \frac{5 +/-\sqrt{25-8} }{2}[/tex]

[tex]x = \frac{5 +/-\sqrt{17} }{2}[/tex]

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