ashlynlopez5 ashlynlopez5
  • 21-06-2021
  • Mathematics
contestada

Using the quadratic formula to solve x2 = 5-x, what are the values of x?
-1+/21
1-1+/19
5+/21
2.
1+ 191
2.

Using the quadratic formula to solve x2 5x what are the values of x 121 1119 521 2 1 191 2 class=

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Luv2Teach
Luv2Teach Luv2Teach
  • 29-06-2021

Answer:

Step-by-step explanation:

First get everything on the same side of the equals sign and set the quadratic equal to 0:

[tex]x^2+x-5=0[/tex] where a = 1, b = 1, c = -5:

[tex]x=\frac{-1+-\sqrt{1^2-4(1)(-5)} }{2(1)}[/tex] which simplifies down a bit to

[tex]x=\frac{-1+-\sqrt{21} }{2}[/tex] and your 2 solutions are

[tex]x=\frac{-1+\sqrt{21} }{2}[/tex]  and  [tex]x=\frac{-1-\sqrt{21} }{2}[/tex]

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