Question

if x is equal to 2 + root 3 then what is x square minus one by x square​

Answer 1

Answer:

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Answer 2

$x=2+\sqrt{3}\\\frac{x^2-1}{x^2} =\frac{[2+\sqrt{3}]^2-1 }{(2+\sqrt{3})^2} \\\\=\frac{4+3+4\sqrt{3}- 1}{4+3+4\sqrt{3} } \\\\=\frac{6+4\sqrt{3} }{7+4\sqrt{3} } \\\\=\frac{4\sqrt{3}(6)}{4\sqrt{3}(7)} \\\\=\frac{6}{7} \\\\Ans.$

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