masenally12414 masenally12414
  • 26-09-2017
  • Mathematics
contestada

Which equation has the solution x=1+- sqrt 5?

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wizard123
wizard123 wizard123
  • 26-09-2017
[tex]x = 1 \pm \sqrt{5} \\ \\ x - 1 = \pm \sqrt{5} \\ \\ (x-1)^2 = (\sqrt{5})^2 = 5 \\ \\ x^2 -2x +1 = 5 \\ \\ x^2 -2x -4 = 0[/tex]
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202207
202207 202207
  • 25-04-2020

Answer:

its d

Step-by-step explanation:

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