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lozanna [386]
3 years ago
15

PLEASE HELP!!!!!!

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0
A, C, F would be the answers
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x^2+\dfrac1{x^2}=3\implies x^4+1=3x^2\implies x^4-3x^2+1=0

By the quadratic formula,

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\dfrac{3\pm\sqrt5}{15\pm5\sqrt5}\cdot\dfrac{15\mp5\sqrt5}{15\mp5\sqrt5}=\dfrac{45\pm15\sqrt5\mp15\sqrt5-25}{15^2-(5\sqrt5)^2}=\dfrac{20}{100}=\dfrac15

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5th grade math. correct answer will be marked brainliest.
sasho [114]
Hopes this helps:

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