wolfgangali82 wolfgangali82
  • 02-08-2021
  • Mathematics
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Please help with this just tell me A B C or D.

Please help with this just tell me A B C or D class=

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Brownoftheunknown
Brownoftheunknown Brownoftheunknown
  • 02-08-2021

Answer:

The answer is D.

[tex]3x {}^{2} - 10x - 1 = 0[/tex]

Step-by-step explanation:

[tex]x = \frac{5 + 2 \sqrt{7} }{3} [/tex]

Divide each term of 5+2√7 by 3 to get 5/3 + 2/3√7.

[tex]x = \frac{5}{3} + \frac{2}{3} \sqrt{7} [/tex]

[tex]x = \frac{2 \sqrt{7 + 5} }{3} [/tex]

or

[tex]x = 3.43[/tex]

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