Question

if x = 5-2root6 , find the value of x^2+1/x^2

Answer 1

Answer:

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Answer 2

Answer:

(5-2√6)^2 + 1/(5-2√6)^2

25+24-20√6 +1/49-20√6

(49-20√6)^2+1/49-20√6

2401+2400-1960√6+1/49-20√6

4802-1960√6/49-20√6

97.999999

approximately 98